每一个不曾起舞的日子 都是对生命的辜负

参考资料 主要参考 1.shared locks and exclusive locks http://stackoverflow.com/questions/11837428/whats-the-difference-between-an-exclusive-lock-and-a-shared-lock 2.SET TRANSACTION ISOLATION LEVEL (Transact-SQ

ExamplesTo make a backup of an entire database:shell> mysqldump db_name > backup-file.sqlTo load the dump file back into the server:shell> mysql db_name < backup-file.sqlAnother way to reload the dump