我试图完成一个长期的项目,并研究我的法则,以寻找不满意之处,并试图ti。
我的SQL中的数据结构是一张没有方向的图表,在整个Im对业绩感到非常满意,尽管我坚持老习惯,例如,在数据没有变化的情况下,在固定档案中收集结果。 I m还使用平档文件作为我的场地配置数据库,这个系统大约有40条线,其结构为<编码>ConfVar=ConfVarValue。
这是否是一种有效的混合使用 flat和 SQL? 在设计这一结构时,我不断问自己,这些公寓是否足够安全(所有存放在底盘上)。 他们是否为我提供了效率,我最终是以可衡量的方式实现的?
任何人在设计类似数据模型时拥有的任何指导、思想、观察都是宝贵的。 提前感谢。
I noticed that there were some threads with similar questions, and I did look through them but did not really get a convincing answer. Here s my question: The subquery below returns a Table with 3 ...
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