SQL Server数据库登录信息的自动备份和恢复

Automatic Backup and Restore of Login Accounts in SQL Server

当SQL Server数据库在不同的服务器之间转移时，数据库用户的登录帐号的很多信息发生丢失，导致不能登录服务器。通过分析SQL Server登录与用户管理的原理，指出了问题发生的原因，并用TSQL／SQLDMO混合编程实现了SQL Server数据库登录信息的自动备份和恢复。

When a SQL Server database is moved into another SQL Server,all of its login information are lost,thus we cannot connect to the database by its original login accounts.After analyzing the principal of login and user checking, Ⅰ point out the corresponding reason,and then propose a way to automatically backup and restore login accounts of a database by using TSQL and SQL-DMO.