This paper mainly introduces the fuzzy inquiring method in the data base management system. And gives source programs of two universal functions that can realize the fuzzy inquiring. It is especially introduced that how to use the wildcard in SQL.

• 本文主要介绍在数据库管理系统中实现模糊查询的方法与技巧,提供了能卖现真正模糊查询的二个通用函数的源程序,特别是介绍了结构化查询语言SQL中鲜为人知的通配符的使用方法。