You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

23 lines
701 B

CREATE TABLE STUDENT (
STUDENT_ID INT PRIMARY KEY,
LASTNAME VARCHAR(40) NOT NULL,
FIRSTNAME VARCHAR(40) NOT NULL,
GENDER VARCHAR(1) NOT NULL,
CONSTRAINT CHK_STUDENT_ID
CHECK (STUDENT_ID>=100000 AND STUDENT_ID<=999999),
CONSTRAINT CHK_GENDER
CHECK (GENDER='m' OR GENDER='f')
);
CREATE TABLE EXAM (
STUDENT_ID INT,
COURSE VARCHAR(40),
GRADE DECIMAL(2,1),
ATTEMPT INT,
CONSTRAINT PK PRIMARY KEY(STUDENT_ID, ATTEMPT, COURSE),
CONSTRAINT CHK_ATTEMPT CHECK (ATTEMPT IN (1,2,3)),
CONSTRAINT CHK_GRADE CHECK (
GRADE IN (1.0,1.3,1.7,2.0,2.3,2.7,3.0,3.3,3.7,4.0,5.0)
),
CONSTRAINT FK_STUDENT_ID FOREIGN KEY (STUDENT_ID)
REFERENCES STUDENT(STUDENT_ID) ON DELETE CASCADE
);