常見例句It combines EDB, IDB in Datalog with OO concept. 它是從演繹庫的IDB的概念發(fā)展而來的,井稱為IODB。Its input language is based on DATALOG and graph rewriting. 它的輸入語言是基于DATALOG和圖形再編寫。The declarative query language KBL is an extended Datalog, which is adaptable to non-first normal form relation model. 描述性查詢語言KBL是DATALOG針對于非一范式關(guān)系模型的擴(kuò)充。The extended Datalog has more powerful expressiveness than SQL,and can describe more complicated semantics,such as looping and transition closure etc. (2 )針對該模型推廣的 Datalog查詢語言與結(jié)構(gòu)化查詢語言 SQL相比 ,具有更強(qiáng)的表達(dá)能力 ,可以描述諸如循環(huán)和傳遞閉包等復(fù)雜的應(yīng)用語義。Datalog language Datalog語言 返回 datalog