CREATE TABLE dbo.doc_exc (column_a INT) ;
GO
ALTER TABLE dbo.doc_exc ADD column_b VARCHAR(20) NULL 
    CONSTRAINT exb_unique UNIQUE ;
GO
EXEC sp_help doc_exc ;
GO
DROP TABLE dbo.doc_exc ;
GO

' This method creates a new SQL Server database
        ' Create a connection
        conn = New SqlConnection(ConnectionString)
        ' Open the connection
        If conn.State <> ConnectionState.Open Then
            conn.Open()

 End If
        Dim sql As String = "CREATE DATABASE mydb ON PRIMARY" + "(Name=test_data, filename = 'C:\mysql\mydb_data.mdf', size=3," + "maxsize=5, filegrowth=10%)log on" + "(name=mydbb_log, filename='C:\mysql\mydb_log.ldf',size=3," + "maxsize=20,filegrowth=1)"
        ExecuteSQLStmt(sql)
    End Sub 'CreateDBBtn_Click 

Private ConnectionString As String = "Integrated Security=SSPI;" + "Initial Catalog=;" + "Data Source=localhost;"
Private reader As SqlDataReader = Nothing
Private conn As SqlConnection = Nothing
Private cmd As SqlCommand = Nothing
Private AlterTableBtn As System.Windows.Forms.Button
Private sql As String = Nothing
Private CreateOthersBtn As System.Windows.Forms.Button
Private button1 As System.Windows.Forms.Button

Private Sub ExecuteSQLStmt(ByVal sql As String)