社区管理员向用户和用户组分派角色和权限，来设置对社区不同级别的访问。
Community administrators assign roles and permissions to users and user groups to set different levels of access to the community. This scoping can be utilized to implement asset isolation as follows.
DB 2使用五种不同级别的权限来控制用户对实例或数据库执行管理和维护操作。
DB2 USES five different levels of authority to control how users perform administrative or maintenance operations against an instance or a database. These five levels are.
设计了五种角色身份可登陆系统，不同级别的用户对各功能模块的使用权限不同。
Five user roles that have different authorities in different modules were given in the system.
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