関連ワード:  is sql a procedural language    sql is a procedural language true or false    sql is a procedural language or not    sql is a procedural language of 4gl    is sql a non procedural language    is pl sql a procedural language    is sql a procedural query language    pl sql is a procedural language that has    true false sql is a procedural language of 4gl    pl sql is not a procedural language