4. Using the following sample relation and your knowledge of declarative constraints: STUDENT (Title, Name, Gender, Birthday, Address, Email, Mobile, SID, MID, PROJID, PLACID) • SID is the student identifier • MID is the identifier of the compulsory assigned staff mentor (Table: STAFF) • PROJID is the identifier of the optional project selected by the student (Table: PROJECT) • PLACID is the identifier of the optional industrial placement undertaken by the student (Table:PLACEMENT) Address each of the following tasks. a. Suggest and justify a PRIMARY KEY for this relation. Write the correct partial SQL code to implement this. (Note : Write only SQL command to create primary key)
4. Using the following sample relation and your knowledge of declarative constraints: STUDENT (Title, Name, Gender, Birthday, Address, Email, Mobile, SID, MID, PROJID, PLACID) • SID is the student identifier • MID is the identifier of the compulsory assigned staff mentor (Table: STAFF) • PROJID is the identifier of the optional project selected by the student (Table: PROJECT) • PLACID is the identifier of the optional industrial placement undertaken by the student (Table:PLACEMENT) Address each of the following tasks. a. Suggest and justify a PRIMARY KEY for this relation. Write the correct partial SQL code to implement this. (Note : Write only SQL command to create primary key)
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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