It is capable of logging database events such as authorization checking, database object maintenance, security maintenance, system administration, and user validation.
它可以对一些数据库事件，例如授权检查、数据库对象维护、安全性维护、系统管理和用户验证等做日志记录。
When an authorized user creates an SQL object, such as a view, the authorization ID of the user is marked as the definer of the object.
当一个经过授权的用户创建一个SQL对象(比如视图)时，该用户的权限ID就被标记为对象的定义者。
Each predefined role grants authorization for a fixed set of actions that the user is permitted to perform on this business entity, such as claiming a task or getting the process instance data.
每个预定义的角色都为用户对此业务实体执行一组固定操作授予权限，如声明任务或获取流程实例数据。
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