If your application needs to access multiple resources as part of the same operation, you need two-phase commit transactions.
如果您的应用程序在同一个操作中需要访问多种资源，您就要使用两阶段提交事务。
2
Privileges from multiple privilege groups can be part of a single privilege set.
来自多个权限组的权限可以构成一个权限集合。
3
As you may recall from part 1, this multiple-part article covers Phase 1 of the project: a proof of concept resulting in a set of requirements, a reference architecture, and (ideally reusable) code.