In programming on August 29, 2006 at 11:54 AM

最近在用Rose画数据库的数据模型设计图,画出来的不是ER图,但是和ER图比较相近。不过里面有两个概念一直没搞懂,identifying/non-identifying relationship,仔细查了一下,有不少介绍这个知识的文章。


  1. as you may know very well than me these days blogs are cropping up all over the place.most pepole starting such blogs think,they can write anyway and anything on there blog which is definately not true.but your blog solely stands out for your writing style,it is actually quite engrossing.keep at it.

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