短語詞組短語RDL Relational Database Language 相關(guān)數(shù)據(jù)庫語言relational database sql language 關(guān)系數(shù)據(jù)庫sqlRelational Database Structured Query Language 關(guān)系數(shù)據(jù)庫結(jié)搆化查詢語言 返回 relational database language