« previous next »

Author Question: What is a derived attribute, and how is it different from a stored attribute? What will be an ... (Read 76 times)

Pineapplelove6

  • Hero Member
  • *****
  • Posts: 560
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
Buy Test-Bank


shailee

  • Sr. Member
  • ****
  • Posts: 392
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


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Ancestral versus shared derived characters involving morphological traits. Ancestral versus shared derived characters involving morphological traits.
Derived traits Derived traits
heme of myoglobin (derived from PDB ID 1MBO) heme of myoglobin (derived from PDB ID 1MBO)
Step 3 in the diagnostic process is to retrieve any stored diagnostic trouble codes. Step 3 in the diagnostic process is to retrieve any stored diagnostic trouble codes.
Distribution of F1 and F2 Progeny Derived from a Theoretical Cross Involving Tomatoes Distribution of F1 and F2 Progeny Derived from a Theoretical Cross Involving Tomatoes
The traditional human karyotypes derived from a normal female and a normal male The traditional human karyotypes derived from a normal female and a normal male
Video: Factors that affect conduction rates (myelination, axon diameter & temperature)

For a complete list of videos, visit our video library