access數(shù)據(jù)庫(kù)入門教程 access數(shù)據(jù)庫(kù)的結(jié)構(gòu)層次?
access數(shù)據(jù)庫(kù)的結(jié)構(gòu)層次?第一級(jí)是表對(duì)象和查詢對(duì)象,它們是數(shù)據(jù)庫(kù)的基本對(duì)象,用于在數(shù)據(jù)庫(kù)中存儲(chǔ)數(shù)據(jù)和查詢數(shù)據(jù)。第二層是表單對(duì)象、報(bào)表對(duì)象和數(shù)據(jù)訪問頁,它們是直接面向用戶的數(shù)據(jù)輸入輸出和應(yīng)用系統(tǒng)驅(qū)動(dòng)
access數(shù)據(jù)庫(kù)的結(jié)構(gòu)層次?
第一級(jí)是表對(duì)象和查詢對(duì)象,它們是數(shù)據(jù)庫(kù)的基本對(duì)象,用于在數(shù)據(jù)庫(kù)中存儲(chǔ)數(shù)據(jù)和查詢數(shù)據(jù)。第二層是表單對(duì)象、報(bào)表對(duì)象和數(shù)據(jù)訪問頁,它們是直接面向用戶的數(shù)據(jù)輸入輸出和應(yīng)用系統(tǒng)驅(qū)動(dòng)控制對(duì)象。第三級(jí)是宏對(duì)象和模塊對(duì)象,它們是代碼類型的對(duì)象。它們用于組織宏操作或編寫程序來完成復(fù)雜的數(shù)據(jù)庫(kù)管理,使數(shù)據(jù)管理自動(dòng)化。