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Author Question: Explain what a null is and what some the implications of nulls are for databases. What will be an ... (Read 74 times)

Starlight

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on: Jul 7, 2018
Explain what a null is and what some the implications of nulls are for databases.
 
  What will be an ideal response?

Question 2

A policy is a set of rules for how to do things.
 
  Indicate whether the statement is true or false


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ebonylittles

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

A null is the absence of a value. That means that it cannot be compared to other values. It also can't really be counted or included in calculations. Despite these facts, a null is often a better choice than a zero or an empty string, because it accurately reflects the unknown status of the value rather than substituting a value that may not be accurate and may effect calculations.

Answer to Question 2

TRUE


Starlight

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Reply 2 on: Jul 7, 2018
Excellent

miss.ashley

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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