As part of their operation, they define and authorize certain policies, and delegate the authority to implement them.
作为执行的一部分，他们定义并批准某些政策，并委派此权利来实现这些政策。
In this case however, the change is not backward compatible as the existing consumers using the withdraw operation are broken because they will not be invoking authorize.
不过，在这种情况下，这个变更并不向后兼容，因为使用withdraw操作的现有用户由于不会调用authorize而被断开了。
Availability of the database refers to the database should not refuse to authorize the user 's normal operation, while ensuring efficiency of the system.
数据库的可用性是指不应拒绝授权用户对数据库的正常操作，同时保证系统的运行效率。
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