A.數(shù)據(jù)庫(kù)管理(DBMS) B.數(shù)據(jù)庫(kù) C.管理信息(MIS) D.數(shù)據(jù)詞典
A.主鍵B.約束C.索引D.關(guān)系
A.SELECT stu_name FROM student_info Where stu_grade=80 ORDER BY stu_id ASC; B.SELECT stu_name FROM student_info WHERE stu_grade=80 ORDER BY stu_id DESC; C.SELECT stu_id,stu_name FROM student_info WHERE stu_grade=80 ORDER BY stu_name ASC; D.SELECT stu_name FROM student_info WHERE stu_grade LIKE 80 ORDER BY stu_id DESC;