数据库安全性实现的方法 自主存取控制（DAC）与强制存取控制（MAC） 授权（Authentication）与回收(GRANT&REVOKE) 数据库角色 ,Database security methods to achieve self-access control (DAC) and Mandatory Access Control (MAC) authority (Authentication) and recycling (GRANT & REVOKE) databas

NIIT培训期间学习oracle的笔记,包括了select,delete,update,insert,PL/SQL,trigger,sequence,grant,revoke等-The record about Oracle，include select,delete,update,insert,PL/SQL,trigger,sequence,grant,revoke and so on.

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