A Null Value in a Column May Indicate That There

question 36

True/False

A null value in a column may indicate that there is an appropriate value for that attribute,and although the value is known,no one has entered the value into the database.

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Definitions:

Minimum Wage

The lowest remuneration that employers can legally pay their workers—the rate may be set by national government or by a state or local government.

Substitution Effect

The change in consumption patterns due to a change in the prices of goods, leading consumers to replace more expensive items with less costly alternatives.

Income Effect

A change in the consumption patterns of individuals arising from a change in their real income, due to shifts in prices or income levels.

Unskilled Workers

Workers who have no specific training or specialized skills and usually perform simple tasks that require limited education.