它引出了几个问题：什么是数据库？

It raises questions such as: What is a database?

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什么是数据库使用一个点击流的应用程序关系或NoSQL ？

What database to use for a clicks stream application RELATIONAL or NOSQL?

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改进数据库性能的最佳方法是分析在您的数据库服务器上运行什么查询，且运行它们需要多长时间。

The best tool for improving database performance is analyzing what queries are being run on your database server and how long they are taking to run.

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