英语翻译Watchfor common patterns that complicate physical databa
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英语翻译
Watchfor common patterns that complicate physical database design,such as cyclicassociation and one-to-one associations.Where necessary,create intermediate abstractions to simplify your logical structure.
Watchfor common patterns that complicate physical database design,such as cyclicassociation and one-to-one associations.Where necessary,create intermediate abstractions to simplify your logical structure.
在计算机科学中,抽象化(英语:Abstraction)是将数据与程序,以它的语义来呈现出它的外观,但是隐藏起它的实作细节.抽象化是用来减少程序的复杂度,使得程序员可以专注在处理少数重要的部份.一个电脑系统可以分区成几个抽象层(Abstraction layer),使得程序员可以将它们分开处理.在数据库系统中,可以分为下、中、上三个抽象层:因此,intermediate abstractions 可以理解为 中级抽象层,即是 logical level.
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