SELECT * FROM GRADE;
DELETE FROM GRADE;
SELECT * FROM GRADE;
DROP TABLE GRADE;
HELP TABLES;
HELP DESCRIBE GRADE;
CREATE SUBSCHEMA STUDENT sname,slevel,age;
CREATE USER user5 User-B;
DELETE FROM ENROLLED WHERE student_num=16711 OR student_num=11;
SELECT deptid FROM DEPARTMENT WHERE location='WLafayette';
SELECT sname FROM STUDENT WHERE age>=21;
QUIT;
