This mechanism can be used, for example, to externally configure process's database access or service invocation address.
举个例子来说，这种机制可以用在外部配置过程的数据库访问或者服务调用地址。
Locking is the mechanism that the database manager USES to control concurrent access to data in the database by multiple applications.
锁定是数据库管理器用来控制多个应用程序并发访问数据库中数据的机制。
Finally, we covered how schemas can be used as an effective mechanism for controlling access to database objects in multi-user environments.
最后，讨论了在多用户环境中如何使用模式有效地控制对数据库对象的访问。
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