This limitation is significant because most useful stored procedures have an OUT parameter that provide some sort of data to the calling program.
这种限制非常重要，因为大多数有用的存储过程都有一个 OUT 参数，该参数向访问程序提供了一些数据。
Many useful Web applications have popped up all over the Web as a result, as they mix and mash data from several sources to provide some useful purpose to their end users.
于是Web上出现了很多流行的Web应用程序，它们融合了不同来源的数据帮助终端用户实现特定目标。
Moreover, by introduction of the whole process of the test from plan, practice to data analysis, the paper hope to provide some useful reference for the successors.
另外，本文通过对试验从方案设计、实施到数据分析全过程的介绍，希望给以后此类的试验研究提供有用的参考。
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