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Engineering
Computer Science
Enroll(SIN: Integer, CID: String, Term: String, Grade: Integer); Teaches(CID: String, Term: String, InstructorSIN: Integer);   Note: in the above relations, “SIN” stands for Social Insurance Number, and thus is a unique identifier for any person associated with the university (whether student, instructor, or other employee of the university).                                                                                                                                                                                  Write SQL CHECK constraints, assertions or triggers (as appropriate) to ensure each of the following requirements, considered independently.

Enroll(SIN: Integer, CID: String, Term: String, Grade: Integer); Teaches(CID: String, Term: String, InstructorSIN: Integer);   Note: in the above relations, “SIN” stands for Social Insurance Number, and thus is a unique identifier for any person associated with the university (whether student, instructor, or other employee of the university).                                                                                                                                                                                  Write SQL CHECK constraints, assertions or triggers (as appropriate) to ensure each of the following requirements, considered independently.

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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Consider the following relational schema.

 

Enroll(SIN: Integer, CID: String, Term: String, Grade: Integer);

Teaches(CID: String, Term: String, InstructorSIN: Integer);

 

Note: in the above relations, “SIN” stands for Social Insurance Number, and thus is a unique identifier for any person associated with the university (whether student, instructor, or other employee of the university).

                                                                                                                                                                                

Write SQL CHECK constraints, assertions or triggers (as appropriate) to ensure each of the following requirements, considered independently.

 

 

 

 

 

 

  1.  All grades are between 0 and 100 (inclusive)

 

 

 

 

 

 

 

 

  1. No student can take more than 5 courses in a term.
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