【摘要】 查询是数据库管理系统中不可缺少的功能,所研究的数据查询模式包括组合查询及模糊查询两种。该技术充分利用了PowerBuilder中数据窗口的功能,从根本上解决了传统数据查询方式的弊端,提高了开发效率,方便了用户的使用,并且在实际项目中得到了很好的应用。更多还原

【Abstract】 Query is the indispensable function of data base management system.The data-querying mode under studied includes two kinds of technologies.They are combination query and fuzzy query which use the function of data window enough based on PowerBuilder.The technology solves defects of traditional data-querying mode thoroughly,and enhances the efficiency of development,using conveniently,and has better application in practical items.更多还原