added sections to dapper article

docs/en/Community-Articles/2023-03-20-Dapper/POST.md

@@ -1,20 +1,86 @@
 # Using Dapper with the ABP Framework
 
-[Dapper](https://github.com/DapperLib/Dapper) is a simple and lightweight object mapper for .NET. A key feature of Dapper is its [high performance](https://github.com/DapperLib/Dapper#performance) compared to other ORMs. In this article, I will show how to use it in your ABP projects.
+[Dapper](https://github.com/DapperLib/Dapper) is a simple and lightweight object mapper for .NET. A key feature of Dapper is its [high performance](https://github.com/DapperLib/Dapper#performance) compared to other ORMs. In this article, I will show how to use it in your ABP projects. But, first look at when to use it.
+
+### Source Code
+
+You can find the [full source code of the demo application here](https://github.com/abpframework/abp-samples/tree/master/Dapper).
 
 ## When to use Dapper?
 
 In ABP Framework, we suggest to use Dapper in a combination with Entity Framework Core (EF Core) for the following reasons:
 
-* EF Core is much easier to use (you don't need to manually write SQL queries for example)
+* EF Core is much easier to use (you don't need to manually write SQL queries and work with low level database objects).
 * EF Core abstracts different DBMS dialects, so it will be easier to change your DBMS later.
+* EF Core's change tracking system automatically update changes in the database.
 * EF Core is better compatible with Object Oriented Programming (OOP) practices and is more type safe to work with. So, EF Core code is more understandable and maintainable.
 
-In most of your use cases, you typically work with one or a few entities where the performance doesn't make much difference. However, there may be certain places in your application where it matters:
+In most of your use cases, you typically work with one or a few entities and a maintainable codebase can be chosen instead of slight performance difference. However, there may be certain places in your application where it matters:
 
-* You may work with a lot of entities, so want to query faster.
+* You may work with a lot of entities, so want to query faster (Indeed, EF Core's [AsNoTracking()](https://learn.microsoft.com/en-us/ef/core/querying/tracking) extension can help in most cases).
 * You may be performing too many database operations in a single request.
 * EF Core may not create an optimized SQL query and you may want to manually write it for a better performance.
 
-In such cases, performance can be critical. Dapper can be a good choice if you want to easily write SQL queries and bind the result to your objects.
+For such cases, Dapper can be a good choice. You can easily write SQL queries and bind the result to your objects.
+
+## Setting Up the Entity Framework Core Part
+
+We will use EF Core with Dapper, so we need to configure the EF Core first. I will use the following `Book` entity as an example:
+
+````csharp
+public class Book : AuditedAggregateRoot<Guid>
+{
+    public string Name { get; set; }
+    public DateTime PublishDate { get; set; }
+    public float Price { get; set; }
+}
+````
+
+Once I created the `Book` entity, I should add it to my `DbContext` class.
+
+````csharp
+public class DapperDemoDbContext : AbpDbContext<DapperDemoDbContext>
+{
+    // 1 - ADD A DBSET PROPERTY
+    public DbSet<Book> Books { get; set; }
+
+    public DapperDemoDbContext(DbContextOptions<DapperDemoDbContext> options)
+        : base(options)
+    {
+    }
+
+    protected override void OnModelCreating(ModelBuilder builder)
+    {
+        //...other code parts
+        
+        // 1 - MAP YOUR ENTITY TO THE DATABASE TABLE
+        builder.Entity<Book>(b =>
+        {
+            b.ToTable("Books");
+            b.Property(x => x.Name).IsRequired().HasMaxLength(128);
+        });
+    }
+}
+
+````
+
+TODO: database migrations...
+
+## Using Dapper Without the Integration Package
+
+ABP provides an integration package for Dapper. However, first I want to show using Dapper without the integration package.
+
+### Installing the Dapper Package
+
+First, install the [Dapper](https://www.nuget.org/packages/Dapper) package to your project. You can use a command-line terminal, locate the root path of your project (`.csproj` file that you want to install it) and run the following command:
+
+````bash
+dotnet add package Dapper
+````
+
+> If your application is layered, then we suggest to add the `Dapper` package to your `EntityFrameworkCore` integration project in your solution.
+
+
+
+s