A poor logical database design can hinder the performance of the whole system 邏輯數(shù)據(jù)庫設(shè)計(jì)不好,會影響整個系統(tǒng)的性能。
Sometimes , the logical database design is already fixed and total redesign is not realistic 有時(shí),邏輯數(shù)據(jù)庫設(shè)計(jì)已經(jīng)固定,全部進(jìn)行重新設(shè)計(jì)是不現(xiàn)實(shí)的。
A good logical database design can lay the foundation for optimal database and application performance 設(shè)計(jì)好邏輯數(shù)據(jù)庫,可以為優(yōu)化數(shù)據(jù)庫和應(yīng)用程序性能打下基礎(chǔ)。
Normalizing a logical database design involves using formal methods to separate the data into multiple , related tables 規(guī)范化邏輯數(shù)據(jù)庫設(shè)計(jì)包括使用正規(guī)的方法來將數(shù)據(jù)分為多個相關(guān)的表。