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Author Question: What is the difference between an entity type and an entity instance? What will be an ideal ... (Read 78 times)

asd123

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on: Jul 7, 2018
What is the difference between an entity type and an entity instance?
 
  What will be an ideal response?

Question 2

In 1998, ANSI/SPARC published an important document describing the three-schema architecture.
 
  Indicate whether the statement is true or false
Modern Database Management ¦ Hoffer, Venkataraman, Topi ¦ 13th Edition
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Tabitha_2016

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Reply #1 on: Jul 7, 2018
Answer to Question 1

An entity type is a collection of entities that share common properties. An entity instance is a single occurrence of an entity type. So, for example, STUDENT is an entity type and John Smith is an entity instance.

Answer to Question 2

FALSE


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