Subject: MYSQL 4. Consider relation Presidents representing US presidents. Suppose that thefollowing business rules hold:1. No two presidents have the same name and year of birth2. No two presidents have the same inauguration date3. All presidents have a name and a year of birth, and have beeninaugurated into office4. Not all presidents are affiliated with a political partyWhich of the following is a valid create table statement for relation Presidents?а)create table Presidents (name varchar(128) primary key,year_of_birth number not null,inauguration_date date unique,party varchar(32)b)create table Presidents (name varchar(128),year_of_birth number,inauguration_date date not null,party varchar(32),primary key (name, year_of_birth)create table Presidents (name varchar(128) not null,year_of_birth number not null,inauguration_date date not null unique,party varchar (32),unique (name, year_of_birth)d) create table Presidents (name varchar(128) not null,year_of_birth number not null,inauguration_date date primary key,party varchar(32),unique (name, year_of_birth)

Solution: Correct Answer is : Option- (d)

Answered: 4. Consider relation Presidents…

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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