Basics of searching any type of database - be it TigerCat, electronic resources, or Internet search engines.
Boolean Logic consists of three main logical operators or connectors: AND, OR and NOT
| Boolean Operator: AND |
Boolean AND |
- Finds sources containing two or more ideas
- The database will only retrieve items containing both words
- AND narrows your search
- You can use AND many times in one search
- Example shown: books AND censorship
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| Boolean Operator: OR |
Boolean OR |
- Use OR when searching for synonyms
- OR tells the database that the words can be used interchangeably, so it will retrieve items containing either word
- OR broadens your search to include synonyms and related words or even unrelated words
- You can use OR many times in one search
- Example shown: books OR films
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| Boolean Operators: AND and OR |
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- Make a complex search using both AND and OR by placing parentheses around synonyms
- Example: (electronic OR internet OR web) AND (vote OR voting)
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| Boolean Operator: NOT |
Boolean NOT |
- Use NOT when you wish to exclude records from your search results
- Example shown: books NOT politics
- Be careful when using NOT. The term you want may be present in an important way in results that also contain the word you wish to avoid.
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 Cynthia Peterson Contact InfoJarrett Library Room 110
903-923-2257 Send Email Gibberin' Contact Information::
cpeterson |
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