Consider the following E/R diagram with isa relationships, in which every node represents an entity set. If we follow an object- oriented approach and convert this hierarchy into relations/classes, the number of relations generated will be Isa Isa Isa

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
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This is a Database course. Please explain how you get the answer and if there is a formula for such kinds of questions. 

I would love to understand how that question is answered as I have an exam tomorrow.

I got 4 as an answer but 4 is not the answer.

Thank you in advance.

Consider the following E/R diagram with isa relationships, in which every node represents an entity set. If we follow an object-
oriented approach and convert this hierarchy into relations/classes, the number of relations generated will be
Isa
Isa
Isa
Answer:
4
Transcribed Image Text:Consider the following E/R diagram with isa relationships, in which every node represents an entity set. If we follow an object- oriented approach and convert this hierarchy into relations/classes, the number of relations generated will be Isa Isa Isa Answer: 4
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