SCHEME NO. 9261 CERTIFICATE IN TELEMATICS (INTERMEDIATE LEVEL) BOOLEAN OPERATORS

What Are Boolean Operators?

Some search engines have the technology to support a range of Boolean search operators. That is symbols and words which help to refine or narrow a search so that you get the best results and eliminate irrelevant files.

Operator Example Finds

AND gardening AND vegetables pages that include both (or all if there are more than two) of the words, i.e. pages that contain both gardening and vegetables

OR whales OR dolphins pages that include either of the words or both, i.e. pages containg whales or dolphins or pages containing BOTH whales and dolphins.

NOT science NOT fiction pages that include the first word but not the second, i.e. pages containing science but not fiction.

+ +san+francisco+restaurants pages that include all of the words

- +san+francisco-restaurants-hotels pages that contain the words "san" and "fransisco" but NOT containing the words "restaurants" or "hotels"

"....." "FA Cup Finalists" pages containing that phrase, i.e. pages containing the phrase "FA Cup Finalists"

(......) Homer NOT (Simpson OR Alaska) pages containing the first word but neither of the words in brackets. i.e. Homer but not Homer Simpson or Homer Alaska.

Practice using these operators with a variety of different search engines.

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Operator	Example	Finds
AND	gardening AND vegetables	pages that include both (or all if there are more than two) of the words, i.e. pages that contain both gardening and vegetables
OR	whales OR dolphins	pages that include either of the words or both, i.e. pages containg whales or dolphins or pages containing BOTH whales and dolphins.
NOT	science NOT fiction	pages that include the first word but not the second, i.e. pages containing science but not fiction.
+	+san+francisco+restaurants	pages that include all of the words
-	+san+francisco-restaurants-hotels	pages that contain the words "san" and "fransisco" but NOT containing the words "restaurants" or "hotels"
"....."	"FA Cup Finalists"	pages containing that phrase, i.e. pages containing the phrase "FA Cup Finalists"
(......)	Homer NOT (Simpson OR Alaska)	pages containing the first word but neither of the words in brackets. i.e. Homer but not Homer Simpson or Homer Alaska.