Given the number of INSERT, UPDATE, and DELETE operations and changes in data distributions, you need to collect the right statistics regularly and with minimum resource consumption.

您需要根据INSERT、UPDATE和DELETE操作的数目和数据分布的变化，在资源消耗尽量少的情况下定期收集正确的统计数据。

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The advantage of the insert statements with the XMLTABLE function over the annotated schema shred is generally better performance if the shredding is simple and the number of target tables is small.

相对于带注释的模式分解，这种使用xmltable函数的insert语句的优点是，如果分解比较简单，并且目标表的数量不多，这种方法通常可以取得更好的性能。

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Tests 31-37 in Appendix a give some results for how insert time can vary with the number of indexes and when they're created.

附录A中的test 31 - 37给出的结果表明，insert的耗时是如何随着索引的数目以及创建索引的时机而变化的。

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This little set of code here from create insert and number. What's create do?

这一小段代码是创建插入和编号的,创建是做什么的？

麻省理工公开课 - 计算机科学及编程导论课程节选

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