关联在多表数据操作中的应用

Application of Association Method in Multi-table Data Operation

面对大量数据,关联是一种行之有效的方法。由于VFP语言简单易学,有广大的用户群,非常适合普及。这就使得非计算机人员也可以方便的掌握关联这种方法。经过几年的应用,我们在利用用户别名来分清当前工作区、关联时索引关键字必须结构一致、多对一表的关联方法、关联产生循环的处理方法等方面总结出一些经验。

Facing a great deal of data,the connection is a kind of to go of valid method.Because the language of VFP is in brief easy to learn,there are large customers,very in keeping with universality.This make non-calculator personnel also can with convenient control connection this kind of method.Through several years of application,we at make use of the customer nickname to peg out the current work area,connection the index key word must the structure is consistent,an a the processing method etc.of the connection method,connection creation circulation of the form tallies up a some experience.