数据库-无损连接 Dec 31st, 2015 8:30 am http://blog.csdn.net/ristal/article/details/6651991 http://wenku.baidu.com/link?url=NbAlrdnO1fK1uU6u3bWywLdbiMEpszcaDEQVgp5qBbrFpaue1SyhBCkmxKreo4xTFVuLVJTUnnaRLj1504MUpSY0eEIgVNgLaxxFfRAy8WG
