这些系统对文件进行加锁，这样在某个时间只有一个开发人员对中心仓库具有写入权限。
These systems lock files so that only one developer has write access to the central repository at a time.
适用于一个系统的安全策略实质上是一个良好定义的“仓库”，它存储了授予这个系统中不同实体的访问权限的断言。
The security policy applicable to a system is in essence a well-defined "repository" of assertions regarding access permissions granted to the different entities in that system.
普通职员只有更改自己信息和查看仓库数据信息的权限。
General staff only change their own information and permission to view the data warehouse information.
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