Oracle 12c: SQL
Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
Expert Solution & Answer
Chapter 1, Problem 2RQ

Explanation of Solution

Entity:

Entity is the basic block for building the data collected about person, place, event, or thing.

  • Entities represent attributes that can have multiple instances.
  • To locate the information in the entity, they have a name, short description about what they are and identifier.
  • Identifiers are used to identify each and every individual instance of an entity.
  • Relationship denotes the link between the entities...

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What is an entity set?
what is another term for an entity unique identifier? a) local key b) primary key c) association d) foreign key
Entity, relationship, and attribute names and definitions should all be correct.
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