In DBMS,the languages used to describe schemas, subschemas, and storage schemas.; 在數(shù)據(jù)庫管理系統(tǒng)中,用來描述模式、子模式和存儲(chǔ)模式的語言。 data definition language (ddl): 數(shù)據(jù)定義語言ddl data definition language: 數(shù)據(jù)定義語言ddl data-definition-language: 數(shù)據(jù)定義語言ddl database definition language: 數(shù)據(jù)庫定義語言ddl description definition language: 描述定義語言下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
