« previous next »

Author Question: What are the advantages and disadvantages of normalization? What will be an ideal ... (Read 61 times)

luminitza

  • Hero Member
  • *****
  • Posts: 555
on: Jul 7, 2018
What are the advantages and disadvantages of normalization?
 
  What will be an ideal response?

Question 2

SQL views are not used ________.
 
  A) to hide columns
  B) to show results of computed columns
  C) to hide complicated SQL statements
  D) to enforce primary key constraints


Ashley I

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 7, 2018
Answer to Question 1

The advantages of normalization are that it (1 ) eliminates modification anomalies and (2 ) reduces duplicated data. Reducing duplicated data will eliminate data integrity problems and save file space. The disadvantages of normalization are that it (1 ) will require application developers to write more complicated SQL statements for multitable subqueries and joins, and (2 ) may slow down the applications running against the database.

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Advantages and disadvantages of select temperature measurement sites Advantages and disadvantages of select temperature measurement sites
Cultures Ideal Body Types Cultures Ideal Body Types
Advantages of Observational Method Advantages of Observational Method
A very light ideal spring stretches by when it is used to hang a 135-N object. What is the ... A very light ideal spring stretches by when it is used to hang a 135-N object. What is the ...
If CP for an ideal gas is 35.4 J/molK, which of the following is CV for this gas? If CP for an ideal gas is 35.4 J/molK, which of the following is CV for this gas?
For the circuit in Figure 1, assume ideal diodes. The peak inverse voltage is approximately For the circuit in Figure 1, assume ideal diodes. The peak inverse voltage is approximately
Video: Introduction to Herpes

For a complete list of videos, visit our video library