Author Question: Explain what a null is and what some the implications of nulls are for databases. What will be an ... (Read 64 times)

Starlight · **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

ebonylittles · **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