以北京市地理信息公众查询系统为例,按照软件工程的思想与要求,(Beijing municipal geographic information public inquiry system, for example, according to the software engineering ideas and requirements,)

示范复制排序,输出过滤查询打印,取得字段及索引信息的范例程序(Demonstration copy of sorting, output filter query printing, sample application fields and index information)