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Author Question: Since a single data flow may only show part of the collective data, A) the data store may be ... (Read 134 times)

jparksx

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on: Jul 7, 2018
Since a single data flow may only show part of the collective data,
 
  A) the data store may be linked to several external structures defining the different data flows.
  B) many data flows may have to be examined to determine the contents of a data store.
  C) data stores must contain multiple redundant elements within repeating groups indicated by braces .
  D) an alias must be used.

Question 2

Explain why Normalization is important for database design.
 
  What will be an ideal response?


vickybb89

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

B

Answer to Question 2

Normalization helps ensure that a database functions properly and that data can be entered, updated and removed without anomalies and unintended consequences. Failure to normalize a database may result in a database where data cannot be entered as needed, where updates must be made in several places and where deletions cause important data to also be lost. In short, failure to normalize a database may make it unusable.


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jparksx

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Reply #2 on: Jul 7, 2018
Correct answers!


vickybb89

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Reply #3 on: Jul 7, 2018
Great! Please up vote :D


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