diff --git a/flutter/README.md b/flutter/README.md
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+# Flutter Quick Guide
+
+
+
+```shell
+
+// configure sdk root folder
+$ flutter config --android-sdk d:/development/android/sdk
+
+// 
+$ flutter upgrade
+
+$ flutter doctor
+```
+
diff --git a/mssql/README.md b/mssql/README.md
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+# MS SQL Server
+
+* [SQL Server](https://www.microsoft.com/en-sg/sql-server/sql-server-downloads)
+* Connection Tool
+  * MS SQL Management Studio [SSMS](https://docs.microsoft.com/en-us/sql/ssms/download-sql-server-management-studio-ssms?view=sql-server-ver15)
+  * HeidiSQL
+    * Network : `Microsoft SQL Server (named pipe)`
+    * Library : `MSOLEDBSQL`
+    * Hostname : `\.\pipe\LOCALDB#4BE08EE4\tsql\query`
+    * Use Windows authentication
+