给出了超有限因子到其中的套代数的对角上的忠实正常的条件期望的一个刻画，证明了超有限因子中的套代数的中心恰好是纯量构成的。
The description is given for the faithful normal conditional expectation from a hyperfinite factor onto the diagonal of nest algebra of the hyperfinite factor.
这些基于SQL的新应用程序正在利用现代数据中心开发概念，某些概念强调将更多业务规则和逻辑推到数据库中的重要性。
These new SQL based applications are taking advantage of modern data centric development concepts that stress the importance of pushing more of the business rules and logic into the database.
这是因为现代数据中心环境中的大多数系统是动态的，总是在不断地升级、改进和调优。
This is because most systems in a modern data center environment are dynamic and always under continuous upgrades, improvements, and tuning.
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