AND,OR and NOT are the common most three boolean operators used.Most search tools offer some type of Boolean search option as a way of constructing your research question, and indicating the relationships between your search terms.source: http://www.uleth.ca/lib/guides/rese arch/display.asp?PageID=35

Answered by hiteshnandal , an ibibo Citizen, at 11:39 PM on January 09, 2008

Boolean operators are used in programming. It would be hard for me to explain exactly how they are used in programming without giving you a programming course, but I can tell you basically what they do. The main boolean operators are AND, OR, NOT, and XOR (exclusive or). So:

* (true AND true) makes true
* (true AND false) makes false
* (false AND true) makes false
* (false AND false) makes false

* (true OR true) makes true
* (true OR false) makes true
* (false OR true) makes true
* (false OR false) makes false

* (NOT true) make false
* (NOT false) makes true

XOR is the same as OR except that it only allows one or the other to be true; not both:

* (true XOR true) makes false
* (true OR false) makes true
* (false OR true) makes true
* (false OR false) makes false

Boolean operators can be mixed together like this:

NOT (true XOR (false AND true)) makes false

Answered by Dayananda , an ibibo Advisor, at 7:54 PM on January 09, 2008

Boolean operators are used in programming. It would be hard for me to explain exactly how they are used in programming without giving you a programming course, but I can tell you basically what they do. The main boolean operators are AND, OR, NOT, and XOR (exclusive or). So:

* (true AND true) makes true
* (true AND false) makes false
* (false AND true) makes false
* (false AND false) makes false

* (true OR true) makes true
* (true OR false) makes true
* (false OR true) makes true
* (false OR false) makes false

* (NOT true) make false
* (NOT false) makes true

XOR is the same as OR except that it only allows one or the other to be true; not both:

* '''(true XOR true) makes false'''
* (true OR false) makes true
* (false OR true) makes true
* (false OR false) makes false

Boolean operators can be mixed together like this:

NOT (true XOR (false AND true)) makes false

In programming, you often use symbols to represent these instead of writing out the words. OR is ||, not is !, and AND is &&.

Answered by Nz , an ibibo Master, at 5:55 PM on January 09, 2008

In Computer programming Language there are three main boolean operator known as "AND", "OR", and "NOT" defined, that are used to manipulate true false values.
They can be used to combine your search terms in different ways. They can also be used in combination, to create more complex search statements.

Answered by Ashish , an ibibo Wizard, at 5:50 PM on January 09, 2008