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Author Question: What is a derived attribute, and how is it different from a stored attribute? What will be an ... (Read 34 times)

Pineapplelove6

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on: Jul 7, 2018
What is a derived attribute, and how is it different from a stored attribute?
 
  What will be an ideal response?

Question 2

The relational data model does, at this time, directly support subtype/supertype relationships.
 
  Indicate whether the statement is true or false
Modern Database Management ¦ Hoffer, Venkataraman, Topi ¦ 13th Edition
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shailee

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

A derived attribute is an attribute whose value can be calculated from other related attributes. A derived attribute is not stored in the physical table which is eventually created from the ERD. A stored attribute, as its name implies, is stored as a column in the physical table.

Answer to Question 2

FALSE


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