所以，与简单地优化索引相比，这里的设计决策更加复杂。对这些特性的使用必须加以协调，才能将性能发挥到极至。

So, design decisions are more complicated than simply optimizing indexes; the use of these multiple features must be coordinated to achieve full potential performance.

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为获得最佳性能，开发人员必须掌握JDBC API，并利用诸如批处理和结果优化之类的特性。

For optimal performance, developers must master the JDBC API and exploit features such as batching and result optimizing.

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当查询性能中出现例外情况时，优化指南和统计视图特性对于弥补访问计划估计的不准确性非常有用。

Optimization guidelines and statistical views are useful features to compensate the access plan evaluations when exceptions in query performance occur.

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