Answered step by step
Verified Expert Solution
Question
1 Approved Answer
1-In what circumstances the composite primary key is appropriate? 2-Design the EERD for a media store that have a PRODUCT supertype containing attributes, Prod_Title, Prod_ReleaseDate,
- 1-In what circumstances the composite primary key is appropriate?
- 2-Design the EERD for a media store that have a PRODUCT supertype containing attributes, Prod_Title, Prod_ReleaseDate, Prod_Price, Prod_Type. The subtypes can be BOOK, CD or MOVIE. The book subtype has specific attributes such as Book_CoverType, Book_PageCount, CD has specific attributes as CD_Genre, CD_Artist and Movie has specific attributes like Movie_Rating and Movie_Director.
- 3-Create a database for the scenario given in Question 2. Make sure that disjoint/overlapping constraints and partial/overlapping constraints are taken care of.
Step by Step Solution
★★★★★
3.43 Rating (162 Votes )
There are 3 Steps involved in it
Step: 1
Q1In what circumstances the composite primary key is appropriate Answer They are used for enhancing the integrity and consistency of the model It is s...
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started
Manufacturing Processes for Engineering Materials
Authors: Serope Kalpakjian, Steven Schmid
5th edition
132272717, 978-0132272711
