在保持能够灵活地处理您所控制的类的同时，由于这是直接访问数据，还使速度加快了。
This gives the speed of direct access to data while keeping the flexibility of working with classes that you control.
在保持数据完整性的同时，它们控制对后端数据的访问并在内部对当前事务和数据库锁定进行管理。
They control access to the back-end data and internally manage current transactions and database locking while preserving data integrity.
我们的客户同时利用基于角色的权限和细粒度访问控制。
Our clients take advantage of both role-based permission and fine-grained access control.
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