大多数操作系统使用访问控制来判断一个实体(用户或程序)是否能够访问给定资源。
Most operating systems use access controls to determine whether an entity (user or program) can access a given resource.
正如前面所解释过的，验证功能可用于控制基本CRUD操作，以及在所治理实体的生命周期状态转换上下文中使用。
As explained earlier, Validation functions can be used to control basic CRUD operations as well as in the context of life-cycle state transitions for governed entities.
在更新记录之前，我们通过实体对象方法set使用了乐观并发控制。
Before updating the record, we used optimistic concurrency control with the set entity object method.
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