数据处理仍然是我们的核心系统，特别是现在，世界各国企业都面临着爆炸的数据量。数据库性能已成为一个主要的问题，大多数部门认为，开发商应提供简单的代码来解决眼前的问题让DBA优化任何“问题”之后。-For all the buzz about trendy IT techniques, data processing is still at the core of our systems, especially now that enterprises all over the world are confronted with exploding volumes of data. Database performance has become a major headache, and most IT departments believe that developers should provide simple SQL code to solve immediate problems and let DBAs tune any "bad SQL" later.