Added DBMS restrictions in Entity-Framework-Core-Other-DBMS.

Resolve #2632

docs/en/Entity-Framework-Core-Other-DBMS.md

@@ -91,4 +91,18 @@ Run the `.DbMigrator` project to create the database and seed the initial data.
 
 ## Run the Application
 
-It is ready. Just run the application and enjoy coding.
+It is ready. Just run the application and enjoy coding.
+
+## DBMS restrictions
+
+Different DBMS may have some restrictions, such as the maximum length of field names, index length, etc.
+The module may provide some built-in solutions. You can configure it via `ModelBuilder`. eg: `Identity Server` module.
+
+```csharp
+builder.ConfigureIdentityServer(options =>
+{
+    options.DatabaseProvider = EfCoreDatabaseProvider.MySql;
+});
+```
+
+Related discussions: https://github.com/abpframework/abp/issues/1920

docs/zh-Hans/Entity-Framework-Core-Other-DBMS.md

@@ -91,4 +91,18 @@ builder.ConfigureIdentityServer(options =>
 
 ## 运行应用程序
 
-它已准备就绪, 只需要运行该应用程序与享受编码.
+它已准备就绪, 只需要运行该应用程序与享受编码.
+
+## DBMS限制
+
+不同的DBMS可能存在一些限制, 如字段名称的最大长度, 索引长度等等. 
+模块可能提供了一些内置的解决方案. 你可以通过`ModelBuilder`来配置它 如: Identity Server模块
+
+```csharp
+builder.ConfigureIdentityServer(options =>
+{
+    options.DatabaseProvider = EfCoreDatabaseProvider.MySql;
+});
+```
+
+相关讨论: https://github.com/abpframework/abp/issues/1920