Boolean operators form the basis of mathematical sets and database logic.
Why use Boolean operators?
Databases return results from the commands you enter. Be aware of the order in which words are connected when using Boolean operators:
Example: people AND (success OR successful)
Example: pollution AND (water OR air)
Use AND in a search to:
NOTE: In many, but not all, databases, the AND is implied.
Use OR in a search to:
Use NOT in a search to: