This is the logic that computers use to determine if a statement is true or false. There are 4 main boolean operators: AND, NOT, OR, and XOR. Below are some examples of how the 4 operators work: x AND y retuns True if both x and y are true, otherwise the expression returns False. NOT x returns True if x is false (or null) and False if x is true. x OR y returns True if either x or y or both are true; only if they are both false will it return False. x XOR y returns True if either x or y are true, but not both. If x and y are both true or false, the statement will return False. While boolean expressions are what drive the CPUs in computers, they can also be used by computer users. For example, when searching for information on the Web, many search engines accept boolean operators in the search phrases (i.e. "Yamaha AND piano NOT motorcycle"). Programmers often use boolean expressions in software development to control loops and variables as well.

Answered by dinu , an ibibo Master, at 5:54 AM on November 20, 2007

The term "Boolean," often encountered when doing searches on the Web (and sometimes spelled "boolean"), refers to a system of logical thought developed by the English mathematician and computer pioneer, George Boole (1815-64). In Boolean searching, an "and" operator between two words or other values (for example, "pear AND apple") means one is searching for documents containing both of the words or values, not just one of them. An "or" operator between two words or other values (for example, "pear OR apple") means one is searching for documents containing either of the words.

Answered by satyakam , an ibibo Master, at 5:26 PM on November 19, 2007

Boolean is a logic system. Using the "AND" operator between terms retrieves documents containing both terms. "OR" retrieves documents containing either term. "NOT" excludes the retrieval of terms from your search. Use "NOT" with caution

Answered by Cindy , an ibibo Advisor, at 6:28 PM on November 18, 2007

A field that contains a Yes or No (True or False). Boolean data may be stored as one byte or as little as one bit (1 or 0).

Answered by alokgupta14 , an ibibo Guru, at 6:26 PM on November 18, 2007

Boolean AND, OR and NOT - The operators in conjunction grouping parenthesis an be used to build logical expressions.

Answered by nisha , an ibibo Master, at 3:36 PM on November 18, 2007

Boolean is the "mathematics of logic," developed by English mathematician George Boole in the mid-19th century. Its rules govern logical functions (true/false) and are the foundation of all electronic circuits in the computer. As add, subtract, multiply and divide are the primary operations of arithmetic, AND, OR and NOT are the primary operations of Boolean logic. Boolean logic is turned into logic gates on the chip, and the logic gates make up logic circuits that perform functions such as how to add two numbers together. Various permutations of AND, OR and NOT are used, including NAND, NOR, XOR and XNOR.

Answered by Shishir , an ibibo Master, at 1:37 PM on November 18, 2007

This is the logic that computers use to determine if a statement is true or false. There are 4 main boolean operators: AND, NOT, OR, and XOR. Below are some examples of how the 4 operators work: x AND y retuns True if both x and y are true, otherwise the expression returns False. NOT x returns True if x is false (or null) and False if x is true. x OR y returns True if either x or y or both are true; only if they are both false will it return False. x XOR y returns True if either x or y are true, but not both. If x and y are both true or false, the statement will return False. While boolean expressions are what drive the CPUs in computers, they can also be used by computer users. For example, when searching for information on the Web, many search engines accept boolean operators in the search phrases (i.e. "Yamaha AND piano NOT motorcycle"). Programmers often use boolean expressions in software development to control loops and variables as well.

Answered by rushi , an ibibo Citizen, at 12:12 PM on November 18, 2007

The term "Boolean," often encountered when doing searches on the Web (and sometimes spelled "boolean"), refers to a system of logical thought developed by the English mathematician and computer pioneer, George Boole (1815-64). In Boolean searching, an "and" operator between two words or other values (for example, "pear AND apple") means one is searching for documents containing both of the words or values, not just one of them.

Answered by mrmister , an ibibo Citizen, at 11:02 AM on November 18, 2007

The algebra of logic. It is sometimes called symbolic logic. Boolean algebra is a method of expressing logic in a mathematical context. It is primarily concerned with binary operations and based on the cumulative, associative, and distributive laws of binary operations. Boolean algebra provides the theoretical concepts for computer design. It is not used to solve managerial problems directly.

Answered by Nz , an ibibo Master, at 10:57 AM on November 18, 2007

) The type of an expression with two possible values, "true" and "false". Also, a variable of Boolean type or a function with Boolean arguments or result. The most common Boolean functions are AND, OR and NOT.

Answered by Mayank , an ibibo Advisor, at 10:15 AM on November 18, 2007