diff --git a/src/Infrastructure/Extensions/ServiceCollectionExtensions.cs b/src/Infrastructure/Extensions/ServiceCollectionExtensions.cs
index 885e950..02c210a 100644
--- a/src/Infrastructure/Extensions/ServiceCollectionExtensions.cs
+++ b/src/Infrastructure/Extensions/ServiceCollectionExtensions.cs
@@ -317,6 +317,7 @@ public static class ServiceCollectionExtensions
         this IServiceCollection services,
         IConfiguration configuration,
         IWebHostEnvironment hostEnvironment,
+        List<ConnectionConfig>? connectionConfigs = null,
         Action<object, DataFilterModel>? onDataChanging = null,
         Action<DiffLogModel>? onDiffLogEvent = null
     )
@@ -356,21 +357,35 @@ public static class ServiceCollectionExtensions
         ArgumentException.ThrowIfNullOrEmpty(password);
 
         var connectionString = $"server={server};port={port};database={database};userid={user};password={password};";
-
-        var connectionConfig = new ConnectionConfig()
+        connectionConfigs ??= [];
+        connectionConfigs.Add(new ConnectionConfig()
         {
             DbType = DbType.PostgreSQL,
             ConnectionString = connectionString,
             InitKeyType = InitKeyType.Attribute,
             IsAutoCloseConnection = true,
-            MoreSettings = new ConnMoreSettings()
+            MoreSettings = new ConnMoreSettings
             {
                 PgSqlIsAutoToLower = false,
                 PgSqlIsAutoToLowerCodeFirst = false,
+            },
+            ConfigureExternalServices = new ConfigureExternalServices()
+            {
+                EntityService = (p, c) =>
+                {
+                    if (c.IsPrimarykey == false && new NullabilityInfoContext()
+                            .Create(p).WriteState is NullabilityState.Nullable)
+                    {
+                        c.IsNullable = true;
+                    }
+
+                    c.DbColumnName = UtilMethods.ToUnderLine(c.DbColumnName);
+                },
+                EntityNameService = (p, c) => { c.DbTableName = UtilMethods.ToUnderLine(c.DbTableName); }
             }
-        };
+        });
 
-        var sugarScope = new SqlSugarScope(connectionConfig, client =>
+        var sugarScope = new SqlSugarScope(connectionConfigs, client =>
         {
             client.QueryFilter.AddTableFilter<IDeletable>(d => !d.IsDeleted);
             if (hostEnvironment.IsDevelopment() || hostEnvironment.IsStaging())