Author Question: A system should clearly present information to the user by having an appropriate title for each ... (Read 51 times)

kwoodring · **on:** Jul 7, 2018

A system should clearly present information to the user by having an appropriate title for each display, minimizing the use of abbreviations, and providing clear user feedback.

Indicate whether the statement is true or false

Question 2

What are the some of the dangers of storing redundant data in a database? Provide an example.

What will be an ideal response?

blakcmamba · **Reply #1 on:** Jul 7, 2018

Answer to Question 1

TRUE

Answer to Question 2

The main danger of redundant data is that the database will become inconsistent and inaccurate. When data is redundant--the same data stored in more than one place--it is easy to update the data in one place but fail to update it in the other. For example, consider a database where customer information is stored in two different tables and the customer changes his address. It is updated in one table and not in another. The data has become inaccurate and untrustworthy. It is no longer possible to know which is the correct address for that customer.