Self-test On Boolean Operators (And, Or, Not)

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Elainefranz
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Boolean operators are the words "AND", "OR" and "NOT". When used in library databases (typed between your keywords) they can make each search more precise - and save you time. Take this test on Boolean Operators to know more about it.

• 1.

All of the following are Boolean Operators: AND, OR, NOT.

• A.

True

• B.

False

A. True
Explanation
The statement is true because the operators AND, OR, and NOT are indeed Boolean operators. Boolean operators are used to combine or modify the results of Boolean expressions, which can only have two possible values: true or false. The AND operator returns true if both operands are true, the OR operator returns true if at least one operand is true, and the NOT operator returns the opposite value of its operand. Therefore, all three operators mentioned in the statement are valid Boolean operators.

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• 2.

The operator AND, when used to link two concept terms (e.g. children and violence) will retrieve only those records that contain both concept terms.

• A.

True

• B.

False

A. True
Explanation
With Boolean AND, the database or search engine looks specifically for the presence of BOTH specified words, children and violence, in each record.
AND = Both

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• 3.

Using the operator AND to combine concept terms is a good way to increase the number of records retrieved in a search.

• A.

True

• B.

False

B. False
Explanation
With Boolean AND, BOTH terms must be present in the record. It is reasonable to assume that imposing this specific restriction on the search will result in fewer records.

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• 4.

The operator OR, when used to link two or concept terms will retrieve fewer records because both terms need not be present in each article.

• A.

True

• B.

False

B. False
Explanation
With Boolean OR, the database or search engine is instructed to look for the presence of EITHER term in each record. No specific restrictions have been imposed on this search.
OR = Either.

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• 5.

The operator NOT is another way to broaden a search or retrieve more records.

• A.

True

• B.

False

B. False
Explanation
Boolean NOT imposes a restriction on the search, to EXCLUDE any records that contain the specified term.
NOT = Exclude

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• 6.

The following search statement will exclude any records that contain the term "poodle." (dogs OR canines) NOT cats.

• A.

True

• B.

False

B. False
Explanation
This search query does not specify that poodles are excluded. If an article about poodles contained the word "dog," this record would be retrieved. Only those records that have the word "cats" in them would be eliminated.

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• Current Version
• Aug 18, 2023
Quiz Edited by
ProProfs Editorial Team
• Aug 25, 2010
Quiz Created by
Elainefranz