Added sections under the Using Multiple Databases

docs/en/Entity-Framework-Core-Migrations.md

@@ -453,7 +453,7 @@ builder.Entity<IdentityRole>(b =>
 
 In this way, we re-used the extension method that is used to configure custom property mappings for the role. But, this time, did the same customization for the `IdentityRole` entity.
 
-Now, you can add a new EF Core database migration using the standard `Add-Migration` command in the Package Manager Console (remember to select `.EntityFrameworkCore.DbMigrations` as the Default Project in the PMC):
+Now, you can add a new EF Core database migration using the standard `Add-Migration` command in the Package Manager Console (remember to select `.EntityFrameworkCore.DbMigrations` as the Default Project in the PMC and make sure that the `.Web` project is still the startup project):
 
 ![pmc-add-migration-role-title](images/pmc-add-migration-role-title.png)
 
@@ -588,4 +588,139 @@ An alternative approach would be to allow each module to have its own migrations
 
 ## Using Multiple Databases
 
+The default startup template is organized to use a single database used by all the modules and by your application. However, the ABP Framework and all the pre-built modules are designed so that they can use multiple databases. Each module can use its own database or you can group modules into a few databases.
+
+This section will explain how to move Audit Logging, Setting Management and Permission Management module tables to a second database while the remaining modules continue to use the main ("Default") database.
+
+The resulting structure will be like the figure below:
+
+![single-database-usage](images/multiple-database-usage.png)
+
+### Change the Connection Strings Section
+
+First step is to change the connection string section inside all the `appsettings.json` files. Initially, it is like that:
+
+````json
+"ConnectionStrings": {
+  "Default": "Server=localhost;Database=BookStore;Trusted_Connection=True;MultipleActiveResultSets=true"
+}
+````
+
+Change it as shown below:
+
+````json
+"ConnectionStrings": {
+  "Default": "Server=localhost;Database=BookStore;Trusted_Connection=True;MultipleActiveResultSets=true",
+  "AbpPermissionManagement": "Server=localhost;Database=BookStore_SecondDb;Trusted_Connection=True;MultipleActiveResultSets=true",
+  "AbpSettingManagement": "Server=localhost;Database=BookStore_SecondDb;Trusted_Connection=True;MultipleActiveResultSets=true",
+  "AbpAuditLogging": "Server=localhost;Database=BookStore_SecondDb;Trusted_Connection=True;MultipleActiveResultSets=true"
+}
+````
+
+Added 3 more connection strings for the related module to target the `BookStore_SecondDb` database. `AbpPermissionManagement` is the connection string for the permission management module.
+
+The `AbpPermissionManagement` is a constant [defined](https://github.com/abpframework/abp/blob/97eaa6ff5a044f503465455c86332e5a277b077a/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/AbpPermissionManagementDbProperties.cs#L11) by the permission management module. ABP Framework [connection string selection system](Connection-Strings.md) selects this connection string for the permission management module if you define. If you don't define, it fallbacks to the `Default` connection string.
+
+### Create a Second Migration Project
+
+Defining the connection strings as explained above is enough on runtime. However, `BookStore_SecondDb` database doesn't exist yet. You need to create the database and the tables for the related modules.
+
+Just like the main database, we want to use the EF Core Code First migration system to create and maintain the second database.
+
+The easiest way to create a second project (`.csproj`) for the second migration `DbContext`. Create a new **class library project** in your solution named `Acme.BookStore.EntityFrameworkCore.DbMigrationsForSecondDb` (or name it better if you didn't like it).
+
+`.csproj` content should be something like that:
+
+````xml
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <Import Project="..\..\common.props" />
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <RootNamespace>Acme.BookStore.DbMigrationsForSecondDb</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Acme.BookStore.EntityFrameworkCore\Acme.BookStore.EntityFrameworkCore.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="3.1.0" />
+  </ItemGroup>
+
+</Project>
+````
+
+You can just copy & modify the content of the original `.DbMigrations` project. This project references to the `.EntityFrameworkCore` project. Only difference is the `RootNamespace` value.
+
+**Add a reference** to this project from the `.Web` project (otherwise, EF Core tooling doesn't allow to use the `Add-Migration` command).
+
+### Create the Second DbMigrationDbContext
+
+Create a new DbContext for the migrations and call the extension methods to configure database tables for the related modules:
+
+````csharp
+public class BookStoreSecondMigrationsDbContext : AbpDbContext<BookStoreSecondMigrationsDbContext>
+{
+    public BookStoreSecondMigrationsDbContext(
+        DbContextOptions<BookStoreSecondMigrationsDbContext> options)
+        : base(options)
+    {
+    }
+
+    protected override void OnModelCreating(ModelBuilder builder)
+    {
+        base.OnModelCreating(builder);
+
+        /* Include modules to your migration db context */
+
+        builder.ConfigurePermissionManagement();
+        builder.ConfigureSettingManagement();
+        builder.ConfigureAuditLogging();
+    }
+}
+````
+
+Create a Design Time Db Factory class, that is used by the EF Core tooling (by `Add-Migration` and `Update-Database` PCM commands for example):
+
+````csharp
+/* This class is needed for EF Core console commands
+ * (like Add-Migration and Update-Database commands) */
+public class BookStoreSecondMigrationsDbContextFactory
+    : IDesignTimeDbContextFactory<BookStoreSecondMigrationsDbContext>
+{
+    public BookStoreSecondMigrationsDbContext CreateDbContext(string[] args)
+    {
+        var configuration = BuildConfiguration();
+
+        var builder = new DbContextOptionsBuilder<BookStoreSecondMigrationsDbContext>()
+            .UseSqlServer(configuration.GetConnectionString("AbpPermissionManagement"));
+
+        return new BookStoreSecondMigrationsDbContext(builder.Options);
+    }
+
+    private static IConfigurationRoot BuildConfiguration()
+    {
+        var builder = new ConfigurationBuilder()
+            .SetBasePath(Directory.GetCurrentDirectory())
+            .AddJsonFile("appsettings.json", optional: false);
+
+        return builder.Build();
+    }
+}
+````
+
+This is similar to the class inside the `.EntityFrameworCore.DbMigrations`  project, except this one uses the `AbpPermissionManagement` connection string.
+
+Now, you can open the Package Manager Console, select the `.EntityFrameworkCore.DbMigrationsForSecondDb` project as the default project (make sure the `.Web` project is still the startup project) and run the `Add-Migration` and `Update-Database` commands as shown below:
+
+![pmc-add-migration-initial-update-database](images/pmc-add-migration-initial-update-database.png)
+
+Now, you should have a new database contains only the tables needed by the related modules:
+
+![bookstore-second-database](images/bookstore-second-database.png)
+
+### Remove Modules from the Main Database
+
 TODO

samples/EfCoreMigrationDemo/Acme.BookStore.sln

@@ -39,6 +39,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Acme.BookStore.HttpApi.Clie
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Acme.BookStore.DbMigrator", "src\Acme.BookStore.DbMigrator\Acme.BookStore.DbMigrator.csproj", "{AA94D832-1CCC-4715-95A9-A483F23A1A5D}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Acme.BookStore.EntityFrameworkCore.DbMigrationsForSecondDb", "src\Acme.BookStore.EntityFrameworkCore.DbMigrationsForSecondDb\Acme.BookStore.EntityFrameworkCore.DbMigrationsForSecondDb.csproj", "{9F050D17-3D9E-4A0F-B8F9-D90460ABDC76}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -109,6 +111,10 @@ Global
 		{AA94D832-1CCC-4715-95A9-A483F23A1A5D}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{AA94D832-1CCC-4715-95A9-A483F23A1A5D}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{AA94D832-1CCC-4715-95A9-A483F23A1A5D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{9F050D17-3D9E-4A0F-B8F9-D90460ABDC76}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{9F050D17-3D9E-4A0F-B8F9-D90460ABDC76}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{9F050D17-3D9E-4A0F-B8F9-D90460ABDC76}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{9F050D17-3D9E-4A0F-B8F9-D90460ABDC76}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -130,6 +136,7 @@ Global
 		{E512F4D9-9375-480F-A2F6-A46509F9D824} = {04DBDB01-70F4-4E06-B468-8F87850B22BE}
 		{EF480016-9127-4916-8735-D2466BDBC582} = {04DBDB01-70F4-4E06-B468-8F87850B22BE}
 		{AA94D832-1CCC-4715-95A9-A483F23A1A5D} = {CA9AC87F-097E-4F15-8393-4BC07735A5B0}
+		{9F050D17-3D9E-4A0F-B8F9-D90460ABDC76} = {CA9AC87F-097E-4F15-8393-4BC07735A5B0}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {28315BFD-90E7-4E14-A2EA-F3D23AF4126F}

samples/EfCoreMigrationDemo/src/Acme.BookStore.DbMigrator/appsettings.json

@@ -1,6 +1,9 @@
 {
   "ConnectionStrings": {
-    "Default": "Server=localhost;Database=BookStore;Trusted_Connection=True;MultipleActiveResultSets=true"
+    "Default": "Server=localhost;Database=BookStore;Trusted_Connection=True;MultipleActiveResultSets=true",
+    "AbpPermissionManagement": "Server=localhost;Database=BookStore_SecondDb;Trusted_Connection=True;MultipleActiveResultSets=true",
+    "AbpSettingManagement": "Server=localhost;Database=BookStore_SecondDb;Trusted_Connection=True;MultipleActiveResultSets=true",
+    "AbpAuditLogging": "Server=localhost;Database=BookStore_SecondDb;Trusted_Connection=True;MultipleActiveResultSets=true"
   },
   "IdentityServer": {
     "Clients": {

samples/EfCoreMigrationDemo/src/Acme.BookStore.EntityFrameworkCore.DbMigrationsForSecondDb/Acme.BookStore.EntityFrameworkCore.DbMigrationsForSecondDb.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <Import Project="..\..\common.props" />
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <RootNamespace>Acme.BookStore.DbMigrationsForSecondDb</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Acme.BookStore.EntityFrameworkCore\Acme.BookStore.EntityFrameworkCore.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="3.1.0" />
+  </ItemGroup>
+
+</Project>

samples/EfCoreMigrationDemo/src/Acme.BookStore.EntityFrameworkCore.DbMigrationsForSecondDb/EntityFrameworkCore/BookStoreEntityFrameworkCoreSecondDbMigrationsModule.cs

@@ -0,0 +1,17 @@
+using Acme.BookStore.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection;
+using Volo.Abp.Modularity;
+
+namespace Acme.BookStore.DbMigrationsForSecondDb.EntityFrameworkCore
+{
+    [DependsOn(
+        typeof(BookStoreEntityFrameworkCoreModule)
+        )]
+    public class BookStoreEntityFrameworkCoreSecondDbMigrationsModule : AbpModule
+    {
+        public override void ConfigureServices(ServiceConfigurationContext context)
+        {
+            context.Services.AddAbpDbContext<BookStoreSecondMigrationsDbContext>();
+        }
+    }
+}

samples/EfCoreMigrationDemo/src/Acme.BookStore.EntityFrameworkCore.DbMigrationsForSecondDb/EntityFrameworkCore/BookStoreSecondMigrationsDbContext.cs

@@ -0,0 +1,28 @@
+using Microsoft.EntityFrameworkCore;
+using Volo.Abp.AuditLogging.EntityFrameworkCore;
+using Volo.Abp.EntityFrameworkCore;
+using Volo.Abp.PermissionManagement.EntityFrameworkCore;
+using Volo.Abp.SettingManagement.EntityFrameworkCore;
+
+namespace Acme.BookStore.DbMigrationsForSecondDb.EntityFrameworkCore
+{
+    public class BookStoreSecondMigrationsDbContext : AbpDbContext<BookStoreSecondMigrationsDbContext>
+    {
+        public BookStoreSecondMigrationsDbContext(
+            DbContextOptions<BookStoreSecondMigrationsDbContext> options)
+            : base(options)
+        {
+        }
+
+        protected override void OnModelCreating(ModelBuilder builder)
+        {
+            base.OnModelCreating(builder);
+
+            /* Include modules to your migration db context */
+
+            builder.ConfigurePermissionManagement();
+            builder.ConfigureSettingManagement();
+            builder.ConfigureAuditLogging();
+        }
+    }
+}

samples/EfCoreMigrationDemo/src/Acme.BookStore.EntityFrameworkCore.DbMigrationsForSecondDb/EntityFrameworkCore/BookStoreSecondMigrationsDbContextFactory.cs

@@ -0,0 +1,32 @@
+using System.IO;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Design;
+using Microsoft.Extensions.Configuration;
+
+namespace Acme.BookStore.DbMigrationsForSecondDb.EntityFrameworkCore
+{
+    /* This class is needed for EF Core console commands
+     * (like Add-Migration and Update-Database commands) */
+    public class BookStoreSecondMigrationsDbContextFactory
+        : IDesignTimeDbContextFactory<BookStoreSecondMigrationsDbContext>
+    {
+        public BookStoreSecondMigrationsDbContext CreateDbContext(string[] args)
+        {
+            var configuration = BuildConfiguration();
+
+            var builder = new DbContextOptionsBuilder<BookStoreSecondMigrationsDbContext>()
+                .UseSqlServer(configuration.GetConnectionString("AbpPermissionManagement"));
+
+            return new BookStoreSecondMigrationsDbContext(builder.Options);
+        }
+
+        private static IConfigurationRoot BuildConfiguration()
+        {
+            var builder = new ConfigurationBuilder()
+                .SetBasePath(Directory.GetCurrentDirectory())
+                .AddJsonFile("appsettings.json", optional: false);
+
+            return builder.Build();
+        }
+    }
+}

samples/EfCoreMigrationDemo/src/Acme.BookStore.EntityFrameworkCore.DbMigrationsForSecondDb/EntityFrameworkCore/EntityFrameworkCoreBookStoreSecondDbSchemaMigrator.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Threading.Tasks;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection;
+using Volo.Abp.DependencyInjection;
+
+namespace Acme.BookStore.DbMigrationsForSecondDb.EntityFrameworkCore
+{
+    [Dependency(ReplaceServices = true)]
+    public class EntityFrameworkCoreBookStoreSecondDbSchemaMigrator : ITransientDependency
+    {
+        private readonly IServiceProvider _serviceProvider;
+
+        public EntityFrameworkCoreBookStoreSecondDbSchemaMigrator(
+            IServiceProvider serviceProvider)
+        {
+            _serviceProvider = serviceProvider;
+        }
+
+        public async Task MigrateAsync()
+        {
+            /* We intentionally resolving the BookStoreMigrationsDbContext
+             * from IServiceProvider (instead of directly injecting it)
+             * to properly get the connection string of the current tenant in the
+             * current scope.
+             */
+
+            await _serviceProvider
+                .GetRequiredService<BookStoreSecondMigrationsDbContext>()
+                .Database
+                .MigrateAsync();
+        }
+    }
+}

samples/EfCoreMigrationDemo/src/Acme.BookStore.EntityFrameworkCore.DbMigrationsForSecondDb/Migrations/20200228120435_Initial.Designer.cs

@@ -0,0 +1,362 @@
+// <auto-generated />
+using System;
+using Acme.BookStore.DbMigrationsForSecondDb.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+namespace Acme.BookStore.DbMigrationsForSecondDb.Migrations
+{
+    [DbContext(typeof(BookStoreSecondMigrationsDbContext))]
+    [Migration("20200228120435_Initial")]
+    partial class Initial
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "3.1.0")
+                .HasAnnotation("Relational:MaxIdentifierLength", 128)
+                .HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
+
+            modelBuilder.Entity("Volo.Abp.AuditLogging.AuditLog", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("ApplicationName")
+                        .HasColumnName("ApplicationName")
+                        .HasColumnType("nvarchar(96)")
+                        .HasMaxLength(96);
+
+                    b.Property<string>("BrowserInfo")
+                        .HasColumnName("BrowserInfo")
+                        .HasColumnType("nvarchar(512)")
+                        .HasMaxLength(512);
+
+                    b.Property<string>("ClientId")
+                        .HasColumnName("ClientId")
+                        .HasColumnType("nvarchar(64)")
+                        .HasMaxLength(64);
+
+                    b.Property<string>("ClientIpAddress")
+                        .HasColumnName("ClientIpAddress")
+                        .HasColumnType("nvarchar(64)")
+                        .HasMaxLength(64);
+
+                    b.Property<string>("ClientName")
+                        .HasColumnName("ClientName")
+                        .HasColumnType("nvarchar(128)")
+                        .HasMaxLength(128);
+
+                    b.Property<string>("Comments")
+                        .HasColumnName("Comments")
+                        .HasColumnType("nvarchar(256)")
+                        .HasMaxLength(256);
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("CorrelationId")
+                        .HasColumnName("CorrelationId")
+                        .HasColumnType("nvarchar(64)")
+                        .HasMaxLength(64);
+
+                    b.Property<string>("Exceptions")
+                        .HasColumnName("Exceptions")
+                        .HasColumnType("nvarchar(4000)")
+                        .HasMaxLength(4000);
+
+                    b.Property<int>("ExecutionDuration")
+                        .HasColumnName("ExecutionDuration")
+                        .HasColumnType("int");
+
+                    b.Property<DateTime>("ExecutionTime")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("ExtraProperties")
+                        .HasColumnName("ExtraProperties")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("HttpMethod")
+                        .HasColumnName("HttpMethod")
+                        .HasColumnType("nvarchar(16)")
+                        .HasMaxLength(16);
+
+                    b.Property<int?>("HttpStatusCode")
+                        .HasColumnName("HttpStatusCode")
+                        .HasColumnType("int");
+
+                    b.Property<Guid?>("ImpersonatorTenantId")
+                        .HasColumnName("ImpersonatorTenantId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid?>("ImpersonatorUserId")
+                        .HasColumnName("ImpersonatorUserId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid?>("TenantId")
+                        .HasColumnName("TenantId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("TenantName")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Url")
+                        .HasColumnName("Url")
+                        .HasColumnType("nvarchar(256)")
+                        .HasMaxLength(256);
+
+                    b.Property<Guid?>("UserId")
+                        .HasColumnName("UserId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("UserName")
+                        .HasColumnName("UserName")
+                        .HasColumnType("nvarchar(256)")
+                        .HasMaxLength(256);
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("TenantId", "ExecutionTime");
+
+                    b.HasIndex("TenantId", "UserId", "ExecutionTime");
+
+                    b.ToTable("AbpAuditLogs");
+                });
+
+            modelBuilder.Entity("Volo.Abp.AuditLogging.AuditLogAction", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid>("AuditLogId")
+                        .HasColumnName("AuditLogId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<int>("ExecutionDuration")
+                        .HasColumnName("ExecutionDuration")
+                        .HasColumnType("int");
+
+                    b.Property<DateTime>("ExecutionTime")
+                        .HasColumnName("ExecutionTime")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("ExtraProperties")
+                        .HasColumnName("ExtraProperties")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("MethodName")
+                        .HasColumnName("MethodName")
+                        .HasColumnType("nvarchar(128)")
+                        .HasMaxLength(128);
+
+                    b.Property<string>("Parameters")
+                        .HasColumnName("Parameters")
+                        .HasColumnType("nvarchar(2000)")
+                        .HasMaxLength(2000);
+
+                    b.Property<string>("ServiceName")
+                        .HasColumnName("ServiceName")
+                        .HasColumnType("nvarchar(256)")
+                        .HasMaxLength(256);
+
+                    b.Property<Guid?>("TenantId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("AuditLogId");
+
+                    b.HasIndex("TenantId", "ServiceName", "MethodName", "ExecutionTime");
+
+                    b.ToTable("AbpAuditLogActions");
+                });
+
+            modelBuilder.Entity("Volo.Abp.AuditLogging.EntityChange", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid>("AuditLogId")
+                        .HasColumnName("AuditLogId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<DateTime>("ChangeTime")
+                        .HasColumnName("ChangeTime")
+                        .HasColumnType("datetime2");
+
+                    b.Property<byte>("ChangeType")
+                        .HasColumnName("ChangeType")
+                        .HasColumnType("tinyint");
+
+                    b.Property<string>("EntityId")
+                        .IsRequired()
+                        .HasColumnName("EntityId")
+                        .HasColumnType("nvarchar(128)")
+                        .HasMaxLength(128);
+
+                    b.Property<Guid?>("EntityTenantId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("EntityTypeFullName")
+                        .IsRequired()
+                        .HasColumnName("EntityTypeFullName")
+                        .HasColumnType("nvarchar(128)")
+                        .HasMaxLength(128);
+
+                    b.Property<string>("ExtraProperties")
+                        .HasColumnName("ExtraProperties")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<Guid?>("TenantId")
+                        .HasColumnName("TenantId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("AuditLogId");
+
+                    b.HasIndex("TenantId", "EntityTypeFullName", "EntityId");
+
+                    b.ToTable("AbpEntityChanges");
+                });
+
+            modelBuilder.Entity("Volo.Abp.AuditLogging.EntityPropertyChange", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid>("EntityChangeId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("NewValue")
+                        .HasColumnName("NewValue")
+                        .HasColumnType("nvarchar(512)")
+                        .HasMaxLength(512);
+
+                    b.Property<string>("OriginalValue")
+                        .HasColumnName("OriginalValue")
+                        .HasColumnType("nvarchar(512)")
+                        .HasMaxLength(512);
+
+                    b.Property<string>("PropertyName")
+                        .IsRequired()
+                        .HasColumnName("PropertyName")
+                        .HasColumnType("nvarchar(128)")
+                        .HasMaxLength(128);
+
+                    b.Property<string>("PropertyTypeFullName")
+                        .IsRequired()
+                        .HasColumnName("PropertyTypeFullName")
+                        .HasColumnType("nvarchar(64)")
+                        .HasMaxLength(64);
+
+                    b.Property<Guid?>("TenantId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("EntityChangeId");
+
+                    b.ToTable("AbpEntityPropertyChanges");
+                });
+
+            modelBuilder.Entity("Volo.Abp.PermissionManagement.PermissionGrant", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(128)")
+                        .HasMaxLength(128);
+
+                    b.Property<string>("ProviderKey")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(64)")
+                        .HasMaxLength(64);
+
+                    b.Property<string>("ProviderName")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(64)")
+                        .HasMaxLength(64);
+
+                    b.Property<Guid?>("TenantId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Name", "ProviderName", "ProviderKey");
+
+                    b.ToTable("AbpPermissionGrants");
+                });
+
+            modelBuilder.Entity("Volo.Abp.SettingManagement.Setting", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(128)")
+                        .HasMaxLength(128);
+
+                    b.Property<string>("ProviderKey")
+                        .HasColumnType("nvarchar(64)")
+                        .HasMaxLength(64);
+
+                    b.Property<string>("ProviderName")
+                        .HasColumnType("nvarchar(64)")
+                        .HasMaxLength(64);
+
+                    b.Property<string>("Value")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(2048)")
+                        .HasMaxLength(2048);
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Name", "ProviderName", "ProviderKey");
+
+                    b.ToTable("AbpSettings");
+                });
+
+            modelBuilder.Entity("Volo.Abp.AuditLogging.AuditLogAction", b =>
+                {
+                    b.HasOne("Volo.Abp.AuditLogging.AuditLog", null)
+                        .WithMany("Actions")
+                        .HasForeignKey("AuditLogId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Volo.Abp.AuditLogging.EntityChange", b =>
+                {
+                    b.HasOne("Volo.Abp.AuditLogging.AuditLog", null)
+                        .WithMany("EntityChanges")
+                        .HasForeignKey("AuditLogId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Volo.Abp.AuditLogging.EntityPropertyChange", b =>
+                {
+                    b.HasOne("Volo.Abp.AuditLogging.EntityChange", null)
+                        .WithMany("PropertyChanges")
+                        .HasForeignKey("EntityChangeId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

samples/EfCoreMigrationDemo/src/Acme.BookStore.EntityFrameworkCore.DbMigrationsForSecondDb/Migrations/20200228120435_Initial.cs

@@ -0,0 +1,212 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace Acme.BookStore.DbMigrationsForSecondDb.Migrations
+{
+    public partial class Initial : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "AbpAuditLogs",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(nullable: false),
+                    ExtraProperties = table.Column<string>(nullable: true),
+                    ConcurrencyStamp = table.Column<string>(nullable: true),
+                    ApplicationName = table.Column<string>(maxLength: 96, nullable: true),
+                    UserId = table.Column<Guid>(nullable: true),
+                    UserName = table.Column<string>(maxLength: 256, nullable: true),
+                    TenantId = table.Column<Guid>(nullable: true),
+                    TenantName = table.Column<string>(nullable: true),
+                    ImpersonatorUserId = table.Column<Guid>(nullable: true),
+                    ImpersonatorTenantId = table.Column<Guid>(nullable: true),
+                    ExecutionTime = table.Column<DateTime>(nullable: false),
+                    ExecutionDuration = table.Column<int>(nullable: false),
+                    ClientIpAddress = table.Column<string>(maxLength: 64, nullable: true),
+                    ClientName = table.Column<string>(maxLength: 128, nullable: true),
+                    ClientId = table.Column<string>(maxLength: 64, nullable: true),
+                    CorrelationId = table.Column<string>(maxLength: 64, nullable: true),
+                    BrowserInfo = table.Column<string>(maxLength: 512, nullable: true),
+                    HttpMethod = table.Column<string>(maxLength: 16, nullable: true),
+                    Url = table.Column<string>(maxLength: 256, nullable: true),
+                    Exceptions = table.Column<string>(maxLength: 4000, nullable: true),
+                    Comments = table.Column<string>(maxLength: 256, nullable: true),
+                    HttpStatusCode = table.Column<int>(nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AbpAuditLogs", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "AbpPermissionGrants",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(nullable: false),
+                    TenantId = table.Column<Guid>(nullable: true),
+                    Name = table.Column<string>(maxLength: 128, nullable: false),
+                    ProviderName = table.Column<string>(maxLength: 64, nullable: false),
+                    ProviderKey = table.Column<string>(maxLength: 64, nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AbpPermissionGrants", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "AbpSettings",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(nullable: false),
+                    Name = table.Column<string>(maxLength: 128, nullable: false),
+                    Value = table.Column<string>(maxLength: 2048, nullable: false),
+                    ProviderName = table.Column<string>(maxLength: 64, nullable: true),
+                    ProviderKey = table.Column<string>(maxLength: 64, nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AbpSettings", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "AbpAuditLogActions",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(nullable: false),
+                    TenantId = table.Column<Guid>(nullable: true),
+                    AuditLogId = table.Column<Guid>(nullable: false),
+                    ServiceName = table.Column<string>(maxLength: 256, nullable: true),
+                    MethodName = table.Column<string>(maxLength: 128, nullable: true),
+                    Parameters = table.Column<string>(maxLength: 2000, nullable: true),
+                    ExecutionTime = table.Column<DateTime>(nullable: false),
+                    ExecutionDuration = table.Column<int>(nullable: false),
+                    ExtraProperties = table.Column<string>(nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AbpAuditLogActions", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_AbpAuditLogActions_AbpAuditLogs_AuditLogId",
+                        column: x => x.AuditLogId,
+                        principalTable: "AbpAuditLogs",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "AbpEntityChanges",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(nullable: false),
+                    AuditLogId = table.Column<Guid>(nullable: false),
+                    TenantId = table.Column<Guid>(nullable: true),
+                    ChangeTime = table.Column<DateTime>(nullable: false),
+                    ChangeType = table.Column<byte>(nullable: false),
+                    EntityTenantId = table.Column<Guid>(nullable: true),
+                    EntityId = table.Column<string>(maxLength: 128, nullable: false),
+                    EntityTypeFullName = table.Column<string>(maxLength: 128, nullable: false),
+                    ExtraProperties = table.Column<string>(nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AbpEntityChanges", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_AbpEntityChanges_AbpAuditLogs_AuditLogId",
+                        column: x => x.AuditLogId,
+                        principalTable: "AbpAuditLogs",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "AbpEntityPropertyChanges",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(nullable: false),
+                    TenantId = table.Column<Guid>(nullable: true),
+                    EntityChangeId = table.Column<Guid>(nullable: false),
+                    NewValue = table.Column<string>(maxLength: 512, nullable: true),
+                    OriginalValue = table.Column<string>(maxLength: 512, nullable: true),
+                    PropertyName = table.Column<string>(maxLength: 128, nullable: false),
+                    PropertyTypeFullName = table.Column<string>(maxLength: 64, nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_AbpEntityPropertyChanges", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_AbpEntityPropertyChanges_AbpEntityChanges_EntityChangeId",
+                        column: x => x.EntityChangeId,
+                        principalTable: "AbpEntityChanges",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AbpAuditLogActions_AuditLogId",
+                table: "AbpAuditLogActions",
+                column: "AuditLogId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AbpAuditLogActions_TenantId_ServiceName_MethodName_ExecutionTime",
+                table: "AbpAuditLogActions",
+                columns: new[] { "TenantId", "ServiceName", "MethodName", "ExecutionTime" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AbpAuditLogs_TenantId_ExecutionTime",
+                table: "AbpAuditLogs",
+                columns: new[] { "TenantId", "ExecutionTime" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AbpAuditLogs_TenantId_UserId_ExecutionTime",
+                table: "AbpAuditLogs",
+                columns: new[] { "TenantId", "UserId", "ExecutionTime" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AbpEntityChanges_AuditLogId",
+                table: "AbpEntityChanges",
+                column: "AuditLogId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AbpEntityChanges_TenantId_EntityTypeFullName_EntityId",
+                table: "AbpEntityChanges",
+                columns: new[] { "TenantId", "EntityTypeFullName", "EntityId" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AbpEntityPropertyChanges_EntityChangeId",
+                table: "AbpEntityPropertyChanges",
+                column: "EntityChangeId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AbpPermissionGrants_Name_ProviderName_ProviderKey",
+                table: "AbpPermissionGrants",
+                columns: new[] { "Name", "ProviderName", "ProviderKey" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_AbpSettings_Name_ProviderName_ProviderKey",
+                table: "AbpSettings",
+                columns: new[] { "Name", "ProviderName", "ProviderKey" });
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "AbpAuditLogActions");
+
+            migrationBuilder.DropTable(
+                name: "AbpEntityPropertyChanges");
+
+            migrationBuilder.DropTable(
+                name: "AbpPermissionGrants");
+
+            migrationBuilder.DropTable(
+                name: "AbpSettings");
+
+            migrationBuilder.DropTable(
+                name: "AbpEntityChanges");
+
+            migrationBuilder.DropTable(
+                name: "AbpAuditLogs");
+        }
+    }
+}

samples/EfCoreMigrationDemo/src/Acme.BookStore.EntityFrameworkCore.DbMigrationsForSecondDb/Migrations/BookStoreSecondMigrationsDbContextModelSnapshot.cs

@@ -0,0 +1,360 @@
+// <auto-generated />
+using System;
+using Acme.BookStore.DbMigrationsForSecondDb.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+namespace Acme.BookStore.DbMigrationsForSecondDb.Migrations
+{
+    [DbContext(typeof(BookStoreSecondMigrationsDbContext))]
+    partial class BookStoreSecondMigrationsDbContextModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "3.1.0")
+                .HasAnnotation("Relational:MaxIdentifierLength", 128)
+                .HasAnnotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn);
+
+            modelBuilder.Entity("Volo.Abp.AuditLogging.AuditLog", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("ApplicationName")
+                        .HasColumnName("ApplicationName")
+                        .HasColumnType("nvarchar(96)")
+                        .HasMaxLength(96);
+
+                    b.Property<string>("BrowserInfo")
+                        .HasColumnName("BrowserInfo")
+                        .HasColumnType("nvarchar(512)")
+                        .HasMaxLength(512);
+
+                    b.Property<string>("ClientId")
+                        .HasColumnName("ClientId")
+                        .HasColumnType("nvarchar(64)")
+                        .HasMaxLength(64);
+
+                    b.Property<string>("ClientIpAddress")
+                        .HasColumnName("ClientIpAddress")
+                        .HasColumnType("nvarchar(64)")
+                        .HasMaxLength(64);
+
+                    b.Property<string>("ClientName")
+                        .HasColumnName("ClientName")
+                        .HasColumnType("nvarchar(128)")
+                        .HasMaxLength(128);
+
+                    b.Property<string>("Comments")
+                        .HasColumnName("Comments")
+                        .HasColumnType("nvarchar(256)")
+                        .HasMaxLength(256);
+
+                    b.Property<string>("ConcurrencyStamp")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("CorrelationId")
+                        .HasColumnName("CorrelationId")
+                        .HasColumnType("nvarchar(64)")
+                        .HasMaxLength(64);
+
+                    b.Property<string>("Exceptions")
+                        .HasColumnName("Exceptions")
+                        .HasColumnType("nvarchar(4000)")
+                        .HasMaxLength(4000);
+
+                    b.Property<int>("ExecutionDuration")
+                        .HasColumnName("ExecutionDuration")
+                        .HasColumnType("int");
+
+                    b.Property<DateTime>("ExecutionTime")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("ExtraProperties")
+                        .HasColumnName("ExtraProperties")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("HttpMethod")
+                        .HasColumnName("HttpMethod")
+                        .HasColumnType("nvarchar(16)")
+                        .HasMaxLength(16);
+
+                    b.Property<int?>("HttpStatusCode")
+                        .HasColumnName("HttpStatusCode")
+                        .HasColumnType("int");
+
+                    b.Property<Guid?>("ImpersonatorTenantId")
+                        .HasColumnName("ImpersonatorTenantId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid?>("ImpersonatorUserId")
+                        .HasColumnName("ImpersonatorUserId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid?>("TenantId")
+                        .HasColumnName("TenantId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("TenantName")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("Url")
+                        .HasColumnName("Url")
+                        .HasColumnType("nvarchar(256)")
+                        .HasMaxLength(256);
+
+                    b.Property<Guid?>("UserId")
+                        .HasColumnName("UserId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("UserName")
+                        .HasColumnName("UserName")
+                        .HasColumnType("nvarchar(256)")
+                        .HasMaxLength(256);
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("TenantId", "ExecutionTime");
+
+                    b.HasIndex("TenantId", "UserId", "ExecutionTime");
+
+                    b.ToTable("AbpAuditLogs");
+                });
+
+            modelBuilder.Entity("Volo.Abp.AuditLogging.AuditLogAction", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid>("AuditLogId")
+                        .HasColumnName("AuditLogId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<int>("ExecutionDuration")
+                        .HasColumnName("ExecutionDuration")
+                        .HasColumnType("int");
+
+                    b.Property<DateTime>("ExecutionTime")
+                        .HasColumnName("ExecutionTime")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("ExtraProperties")
+                        .HasColumnName("ExtraProperties")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("MethodName")
+                        .HasColumnName("MethodName")
+                        .HasColumnType("nvarchar(128)")
+                        .HasMaxLength(128);
+
+                    b.Property<string>("Parameters")
+                        .HasColumnName("Parameters")
+                        .HasColumnType("nvarchar(2000)")
+                        .HasMaxLength(2000);
+
+                    b.Property<string>("ServiceName")
+                        .HasColumnName("ServiceName")
+                        .HasColumnType("nvarchar(256)")
+                        .HasMaxLength(256);
+
+                    b.Property<Guid?>("TenantId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("AuditLogId");
+
+                    b.HasIndex("TenantId", "ServiceName", "MethodName", "ExecutionTime");
+
+                    b.ToTable("AbpAuditLogActions");
+                });
+
+            modelBuilder.Entity("Volo.Abp.AuditLogging.EntityChange", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid>("AuditLogId")
+                        .HasColumnName("AuditLogId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<DateTime>("ChangeTime")
+                        .HasColumnName("ChangeTime")
+                        .HasColumnType("datetime2");
+
+                    b.Property<byte>("ChangeType")
+                        .HasColumnName("ChangeType")
+                        .HasColumnType("tinyint");
+
+                    b.Property<string>("EntityId")
+                        .IsRequired()
+                        .HasColumnName("EntityId")
+                        .HasColumnType("nvarchar(128)")
+                        .HasMaxLength(128);
+
+                    b.Property<Guid?>("EntityTenantId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("EntityTypeFullName")
+                        .IsRequired()
+                        .HasColumnName("EntityTypeFullName")
+                        .HasColumnType("nvarchar(128)")
+                        .HasMaxLength(128);
+
+                    b.Property<string>("ExtraProperties")
+                        .HasColumnName("ExtraProperties")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<Guid?>("TenantId")
+                        .HasColumnName("TenantId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("AuditLogId");
+
+                    b.HasIndex("TenantId", "EntityTypeFullName", "EntityId");
+
+                    b.ToTable("AbpEntityChanges");
+                });
+
+            modelBuilder.Entity("Volo.Abp.AuditLogging.EntityPropertyChange", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid>("EntityChangeId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("NewValue")
+                        .HasColumnName("NewValue")
+                        .HasColumnType("nvarchar(512)")
+                        .HasMaxLength(512);
+
+                    b.Property<string>("OriginalValue")
+                        .HasColumnName("OriginalValue")
+                        .HasColumnType("nvarchar(512)")
+                        .HasMaxLength(512);
+
+                    b.Property<string>("PropertyName")
+                        .IsRequired()
+                        .HasColumnName("PropertyName")
+                        .HasColumnType("nvarchar(128)")
+                        .HasMaxLength(128);
+
+                    b.Property<string>("PropertyTypeFullName")
+                        .IsRequired()
+                        .HasColumnName("PropertyTypeFullName")
+                        .HasColumnType("nvarchar(64)")
+                        .HasMaxLength(64);
+
+                    b.Property<Guid?>("TenantId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("EntityChangeId");
+
+                    b.ToTable("AbpEntityPropertyChanges");
+                });
+
+            modelBuilder.Entity("Volo.Abp.PermissionManagement.PermissionGrant", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(128)")
+                        .HasMaxLength(128);
+
+                    b.Property<string>("ProviderKey")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(64)")
+                        .HasMaxLength(64);
+
+                    b.Property<string>("ProviderName")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(64)")
+                        .HasMaxLength(64);
+
+                    b.Property<Guid?>("TenantId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Name", "ProviderName", "ProviderKey");
+
+                    b.ToTable("AbpPermissionGrants");
+                });
+
+            modelBuilder.Entity("Volo.Abp.SettingManagement.Setting", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(128)")
+                        .HasMaxLength(128);
+
+                    b.Property<string>("ProviderKey")
+                        .HasColumnType("nvarchar(64)")
+                        .HasMaxLength(64);
+
+                    b.Property<string>("ProviderName")
+                        .HasColumnType("nvarchar(64)")
+                        .HasMaxLength(64);
+
+                    b.Property<string>("Value")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(2048)")
+                        .HasMaxLength(2048);
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Name", "ProviderName", "ProviderKey");
+
+                    b.ToTable("AbpSettings");
+                });
+
+            modelBuilder.Entity("Volo.Abp.AuditLogging.AuditLogAction", b =>
+                {
+                    b.HasOne("Volo.Abp.AuditLogging.AuditLog", null)
+                        .WithMany("Actions")
+                        .HasForeignKey("AuditLogId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Volo.Abp.AuditLogging.EntityChange", b =>
+                {
+                    b.HasOne("Volo.Abp.AuditLogging.AuditLog", null)
+                        .WithMany("EntityChanges")
+                        .HasForeignKey("AuditLogId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("Volo.Abp.AuditLogging.EntityPropertyChange", b =>
+                {
+                    b.HasOne("Volo.Abp.AuditLogging.EntityChange", null)
+                        .WithMany("PropertyChanges")
+                        .HasForeignKey("EntityChangeId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

samples/EfCoreMigrationDemo/src/Acme.BookStore.Web/Acme.BookStore.Web.csproj

@@ -44,6 +44,7 @@
     <ProjectReference Include="..\Acme.BookStore.Application\Acme.BookStore.Application.csproj" />
     <ProjectReference Include="..\Acme.BookStore.HttpApi\Acme.BookStore.HttpApi.csproj" />
     <ProjectReference Include="..\Acme.BookStore.EntityFrameworkCore.DbMigrations\Acme.BookStore.EntityFrameworkCore.DbMigrations.csproj" />
+    <ProjectReference Include="..\Acme.BookStore.EntityFrameworkCore.DbMigrationsForSecondDb\Acme.BookStore.EntityFrameworkCore.DbMigrationsForSecondDb.csproj" />
     <PackageReference Include="Volo.Abp.AspNetCore.Mvc.UI.Theme.Basic" Version="2.1.1" />
     <PackageReference Include="Volo.Abp.Autofac" Version="2.1.1" />
     <PackageReference Include="Volo.Abp.AspNetCore.Authentication.JwtBearer" Version="2.1.1" />

samples/EfCoreMigrationDemo/src/Acme.BookStore.Web/appsettings.json

@@ -2,9 +2,12 @@
   "App": {
     "SelfUrl": "https://localhost:44312"
   },
-  "ConnectionStrings": {
+"ConnectionStrings": {
-    "Default": "Server=localhost;Database=BookStore;Trusted_Connection=True;MultipleActiveResultSets=true"
+  "Default": "Server=localhost;Database=BookStore;Trusted_Connection=True;MultipleActiveResultSets=true",
-  },
+  "AbpPermissionManagement": "Server=localhost;Database=BookStore_SecondDb;Trusted_Connection=True;MultipleActiveResultSets=true",
+  "AbpSettingManagement": "Server=localhost;Database=BookStore_SecondDb;Trusted_Connection=True;MultipleActiveResultSets=true",
+  "AbpAuditLogging": "Server=localhost;Database=BookStore_SecondDb;Trusted_Connection=True;MultipleActiveResultSets=true"
+},
   "AuthServer": {
     "Authority": "https://localhost:44312"
   },