PRODUCT PK Prod Num Prod Title Prod ReleaseDate Prod Price Prod Type Pice Typn BOOK CD MOVIE PK,FK1 Prod Num PK,FK1 Prod Num PK,FK1 Prod Num Book CoverType Book PageCount CD Genre CD Artist Movie Rating Movie Director
PRODUCT PK Prod Num Prod Title Prod ReleaseDate Prod Price Prod Type Pice Typn BOOK CD MOVIE PK,FK1 Prod Num PK,FK1 Prod Num PK,FK1 Prod Num Book CoverType Book PageCount CD Genre CD Artist Movie Rating Movie Director
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
Related questions
Question
According to the data model, is it required that every entity instance in the PRODUCT table be associated with an entity instance in the CD table? Why, or why not?
![PRODUCT
PK Prod Num
Prod Title
Prod ReleaseDate
Prod Price
Prod Type
Pice Typn
BOOK
CD
MOVIE
PK,FK1 Prod Num
PK,FK1 Prod Num
PK,FK1 Prod Num
Book CoverType
Book PageCount
CD Genre
CD Artist
Movie Rating
Movie Director](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc347f436-5c5d-4b48-81b6-6dc6df2485cc%2Fde77f190-c622-4be6-a714-cb5f3ff1ba36%2Ff390sej_processed.png&w=3840&q=75)
Transcribed Image Text:PRODUCT
PK Prod Num
Prod Title
Prod ReleaseDate
Prod Price
Prod Type
Pice Typn
BOOK
CD
MOVIE
PK,FK1 Prod Num
PK,FK1 Prod Num
PK,FK1 Prod Num
Book CoverType
Book PageCount
CD Genre
CD Artist
Movie Rating
Movie Director
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