Аттачим MSSQL базу используя TSQL
USE [master]
GO
CREATE DATABASE [my_database] ON
( FILENAME = N'E:\DB\my_database.mdf' ),
( FILENAME = N'E:\DB\my_database.ldf' )
FOR ATTACH
GO
USE [master]
GO
CREATE DATABASE [my_database] ON
( FILENAME = N'E:\DB\my_database.mdf' ),
( FILENAME = N'E:\DB\my_database.ldf' )
FOR ATTACH
GO