As you will see later in this article, all it takes to build a simple data base application is eight steps.
在本文后续部分您将看到，构建一个简单的数据库应用程序只需要八个步骤。
Enquiry is frequently used in data base application system which depends on whether the enquiry statement is superior or inferior.
查询是数据库应用系统中使用最频繁的操作，查询语句的优劣直接影响数据库应用系统的性能。
Based on the analysis to several usual operations in data base application system, the optimized strategy on how to construct SQL sentence to improve operation speed is studied in this paper.
本文通过分析数据库应用系统中常见的几种运算，提出了如何构建SQL语句，才能达到运算的优化，提高系统运行速度。
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