深度压缩知识一个例子(IBM在DB 2 9中引入了深度压缩)，但要使用它，您必须了解如何启用它和如何构建压缩字典。
Deep compression is just one example-ibm introduced deep compression in DB2 9, but in order to use it you had to know how to enable it and how to build a compression dictionary.
但要是不允许你引入任何功能变化，只能访问现有应用的源代码和资源，那你该如何完成这一任务呢？
But how to complete this task if you were given access to the source code and resources of an existing application, but not allowed to introduce any functional changes to the application?
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