使用角色管理数据库中的用户和用户组。
Users and groups of users are managed within the database using roles.
这种环境旨在提高数据生命周期内所有角色的生产力，并帮助降低管理数据库应用程序的复杂性和成本。
This environment is designed to increase productivity for all roles throughout the data life cycle and to help reduce the complexity and cost of managing database applications.
该产品组合的目的是增加数据生命周期中的所有角色的生产力，以及降低管理数据库应用程序的复杂性和成本。
This portfolio is designed to increase productivity for all roles throughout the data life cycle and to help reduce the complexity and cost of managing database applications.
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