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PART I: DATA DESCRIPTION LANGUAGE (DDL) 1) Write DDL commands to create the four tables without any constraint. Nom de colonne Signification STDNO SNAME DEPTNO Туре Number Size Student Number 8. Student name Varchar2 Varchar2 30 Department Number Department name Course Number 2 Varchar2 Number Varchar2 Number Number DNAME CORSNO 20 3 CNAME Course Name 30 СМАХ GRADE EDATE Max. students allowed Obtained Grade 2 2 Enrolment date Date 2) Add all the following constraints: - Primary Key - Foreign Key - Constraints on the STUDENT table: - Sname: Not Null - Each student must belong to a department Constraint on the ENROLMENT table *- Edate: have a default value equal to the system date.

PART I: DATA DESCRIPTION LANGUAGE (DDL) 1) Write DDL commands to create the four tables without any constraint. Nom de colonne Signification STDNO SNAME DEPTNO Туре Number Size Student Number 8. Student name Varchar2 Varchar2 30 Department Number Department name Course Number 2 Varchar2 Number Varchar2 Number Number DNAME CORSNO 20 3 CNAME Course Name 30 СМАХ GRADE EDATE Max. students allowed Obtained Grade 2 2 Enrolment date Date 2) Add all the following constraints: - Primary Key - Foreign Key - Constraints on the STUDENT table: - Sname: Not Null - Each student must belong to a department Constraint on the ENROLMENT table *- Edate: have a default value equal to the system date.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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solve this in sql (question2)

Exercise Consider the following relational database: (STDNO, SNAME, DEPTNO#) (DEPTNO, DNAME) (CORSNO, CNAME, DEPTNO#, CMAX) ENROLMENT (STDNO#, CORSNO#, GRADE, EDATE) STUDENT DEP COURSE STUDENT.DEPTNO is the department number of the student. COURSE.DEPTNO is the department number that offers the course. ENROLMENT models the registrations of students in courses (M:M relationship) where the GRADE is the grade obtained by the student in the course. PART I: DATA DESCRIPTION LANGUAGE (DDL) 1) Write DDL commands to create the four tables without any constraint. Nom de colonne Signification Size Туре Number STDNO Student Number 8. SNAME Student name Varchar2 30 Department Number Varchar2 DEPTNO 2 Department name Course Number DNAME Varchar2 20 CORSNO Number CNAME Course Name Varchar2 30 Max. students allowed Obtained Grade Enrolment date СМАХ Number 2 GRADE Number 2 EDATE Date 2) Add all the following constraints: - Primary Key - Foreign Key Constraints on the STUDENT table: Sname: Not Null Each student must belong to a department Constraint on the ENROLMENT table - Edate: have a default value equal to the system date.
Transcribed Image Text:Exercise Consider the following relational database: (STDNO, SNAME, DEPTNO#) (DEPTNO, DNAME) (CORSNO, CNAME, DEPTNO#, CMAX) ENROLMENT (STDNO#, CORSNO#, GRADE, EDATE) STUDENT DEP COURSE STUDENT.DEPTNO is the department number of the student. COURSE.DEPTNO is the department number that offers the course. ENROLMENT models the registrations of students in courses (M:M relationship) where the GRADE is the grade obtained by the student in the course. PART I: DATA DESCRIPTION LANGUAGE (DDL) 1) Write DDL commands to create the four tables without any constraint. Nom de colonne Signification Size Туре Number STDNO Student Number 8. SNAME Student name Varchar2 30 Department Number Varchar2 DEPTNO 2 Department name Course Number DNAME Varchar2 20 CORSNO Number CNAME Course Name Varchar2 30 Max. students allowed Obtained Grade Enrolment date СМАХ Number 2 GRADE Number 2 EDATE Date 2) Add all the following constraints: - Primary Key - Foreign Key Constraints on the STUDENT table: Sname: Not Null Each student must belong to a department Constraint on the ENROLMENT table - Edate: have a default value equal to the system date.
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