AND, OR, NOT -- used to narrow, broaden and exclude respectively in database searching.
Boolean operators, AND, OR, NOT must be used when combining two or more search terms
Th e search terms “and”, “or” and “not” are called Boolean, or logical operators, when they are used to connect words or concepts to do a search. See: Boolean Searching; “And” Search; “Not” Search; “Or” Search; Keyword Searching; and, Nesting.
"Or", "and" and "not" are all Boolean operators and are used to logically link queries, e.g. in search engines on the Internet. Most users are not familiar with how to use them. 7d Technology uses ICDM search technology, which, based on linguistic procedures, finds semantically relevant information in a very user-friendly way, without involving Boolean operators.
Words such as AND, OR, or NOT that are used to combine search terms to broaden or narrow a search via the computer.
Terms (and, or, not) used in searching online resources (such as the library catalog or periodical indexes) that determine the relationship between two or more search terms (i.e. how to combine the words). See also -- Search Term
Commands that allow search terms to be combined to either narrow or broaden a search. Originally developed by the mathematician George Boole in the mid-19th Century. The three basic operators are AND, OR, NOT.
Words (especially AND, OR, NOT) used in electronic databases or catalogs to expand or limit the results of a search.
AND, NOT OR operators which can be used to refine searches
The basic method for combining search terms in a variety of ways. The three Boolean operators are AND, OR, NOT.
Use of the logical operators AND, OR, and NOT to indicate a relationship between search terms. Allow searcher to broaden or narrow search results.
a search language which allows you to indicate how your search terms relate to one another. Relational concepts include nesting, truncation, proximity searching, inclusion and exclusion and others.
Boolean operators are specific words used to help you define your search by (1) narrowing ( and), (2) expanding ( or), and (3) removing ( not) specific words from your search results. For example:"endangered" and"species""university" or"college""insecticides not"DDT" Boolean operators were named after George Boole (1815-1864) who combined the study of logic with that of algebra.
The words 'AND', 'OR' and 'NOT'. 'AND' narrows the search to those records at the conjunction of two or more sets. 'OR' combines two or more sets of records where a common word or phrase is found in a particular record. 'NOT' excludes a part of a set.
the words AND, OR, or NOT used to combine search terms in a database.
A means of combining searches to broaden or narrow search results. The operator and narrows a search; the operator or broadens a search.
Words with the keywords and phrases that give the computer instructions for searching a database.
Words such as AND, OR, and NOT that are used to combine search terms to broaden or narrow the results of a search. Combining terms using operators is sometimes called Boolean searching.
Commands that allow searchers to combine terms and concepts. "And" narrows the search, locating records that have all concepts. "Or" broadens the results, finding all records containing any of the concepts. "Not" excludes records from the search.
also called "logical operators" or just "operators", these are system commands that allow search sets or search terms to be combined to create narrower or broader results. There are two commonly used operators: AND - the most commonly used operator; narrows a search by retrieving just those records that have the combined sets in commom OR - broadens a search by retrieving records that occur in any of the combined sets; commonly used between synonyms
The use of joining words includeing "and," "or," or "not" to describe the logical relationship of one or more search terms with one or more other search terms.
Include both logical operators and positional operators. Governed by algebraic rules (that is, the precedence of performance of the operations -- as in algebra, for instance, when the operation inside the parentheses is always performed first).
A method of combining search terms by expressing the relationship of one concept to another, using the words AND, OR, and NOT. Most databases allow searching with these three Boolean operators. For more information look at Boolean Operators page.
The words And, Or, and And Not used to specify the relationship between multiple search terms.
Typically AND, OR, and NOT, Boolean operators allow logical combinations of search words or phrases.
The standard terms used to combine keywords and other search terms when searching electronic databases (or the Internet). Common Boolean operators: and, or, not. More information Nesting: Using parentheses ensures that the Boolean operators work in the sequence you intend, such as aggression AND (television OR cartoons) to retrieve items on "aggression and television" as well as items on "aggression and cartoons". The OR operation is "nested" and will be performed as a single search; then it will be combined with the AND part of the expression. More information
sometimes called Logical Operators, used in computer searching of online databases to combine similar or different concepts. The standard boolean operators are usually AND, OR, NOT, SAME, WITH.
Boolean operators are terms that allow the user to define logical relationships between the words or phrases that they use to search a database. Examples of Boolean operators are OR, AND, & NOT.
the three Boolean operators are "and", "or", "not". Boolean operators are used to connect two terms or keywords. The "and" operator delivers only those records that contain both or all the words in your search (both or all words will appear in each record). So if you're searching for information on the Detroit Tigers and you connect those terms with the "and" operator, you'll get records about the baseball team, as well as records about the tigers in the Detroit Zoo. The "or" operator delivers records that have any of your search words. So the search "Detroit or tigers" will yield records about Detroit-the-city, tigers in India, tigers in Africa and the baseball team. The "not" operator delivers records that contain only the first word of your search, eliminating from the results any records that might also contain the second word. The search "tigers not Detroit" will deliver records about tigers in India and Africa and in zoos anywhere but Detroit.
Words such as AND, OR, and NOT used to broaden or narrow a search. For example, cats AND dogs narrows the search to titles about both cats and dogs, while cats OR dogs broadens the search.
In order to broaden or narrow a search, you can use the words AND, OR, and NOT. For example, a search of communicable diseases OR infectious diseases will yield more results than a search of either one or the other of the terms. Conversely, a search of communicable diseases AND China will yield fewer results than a search of either one or the other of the terms. Finally, diseases NOT communicable will find information on diseases that are not transmitted by contact. Named after George Boole, the 19th century English mathematician who helped establish modern symbolic logic. See Keyword Searching and Truncation for other search tips.
A set of Boolean Operators such as AND, OR and NOT, that make up a Boolean search string. Boolean search strings are what power your advanced searches on the Net.
Boolean Logic uses the operators AND, OR and NOT to link keywords and phrases in order to perform precise searches. Link to: Searching using Boolean Logic..
Connecting words that determine the logic by which two or more terms are searched in a database, e.g. and, or, not.
connecting words, such as AND, OR, and NOT, that link search terms together in certain logical ways. (Thus, they are sometimes called logical operators.) Used when searching databases that have sophisticated programs.
The three most commonly used Boolean operators are: AND, OR, and NOT. In Boolean searching, an "AND" operator between two words (for example, "apples AND oranges") tells the search engine to find documents that contain both of these words. An "OR" operator (for example, "pear OR apple") tells the search engine to find documents that contain either of the words. A "NOT" operator (for example, "berries" NOT raspberries") tells the search engine to find documents containing only one of the words.
AND, OR, and NOT. Used to combine search terms. AND finds only records that contain both terms. OR finds records that contain either term. NOT finds records that contain the first term but not the second term.
(named for George Boole, 1815-1864, a mathematician) combining terms such as AND, OR, and NOT used in building a search statement or in putting several sets together.
Use of the logical operators AND, OR, and NOT to indicate relationships between terms. These operators are used to formulate search commands in electronic databases.
These operators are designed to put conditions on a search. The most common Boolean operators are AND, OR, and AND NOT.
the Boolean operators of "AND", "OR" and "NOT" [or "AND NOT"] in online searching either narrow or expand the results of the search.
Boolean operators are AND, NOT, OR. They are used to combine search terms to increase or decrease the number of results.
Words (specifically AND, OR, and NOT) that may be used to join or arrange keywords in a search statement in order to narrow or expand the search.
The words AND, OR, and NOT are used to combine search terms to broaden or narrow search results.
the terms AND. OR and NOT used in computerised searching to broaden, narrow, or limit a search. Named after George Boole.
Terms "and", "or" and "not" used in a search to broaden or narrow the results. Also known as logical operators.
Most search engines allow you to limit your search or make it more specific by using words like "And," "Or," and "Not." These words are known as boolean operators because of their origin as terms in logic. For example, if you do a search on "Nonprofits AND Technology," TechSoup.org should show up in the results. Source: TechSoup.org
Words such as "AND," "OR," and "NOT" that are useful in keyword searching. AND - Narrows the search. "North Carolina and Geography" will find items about the geography of North Carolina. The computer will search for documents that have BOTH of those keywords. OR - Broadens the search. "North Carolina or Geography" will find all items about North Carolina and all items about geography. The computer will search for any document with EITHER of the two words. NOT - Narrows the search. "North Carolina not Geography" will find books about North Carolina, but will weed out any books that are about geography.
The words and, or, and not; used to define the relationship between keywords. Use the "Back" button at the top of your screen to return to the previous screen.
(logical operators) Terms such as "and," "or," and "not" used to express the relationship of one term to another when searching databases. Examples: violence and television -- (finds ALL keywords) violence and (television or media) -- (finds 1st keyword and either one or both other keywords) violence not television -- (finds 1st keyword, excludes the other)
Connectors that describe the logical relationship between search words. Some commonly used operators are: AND, OR, NOT, ADJ.
AND, OR, and NOT used when searching electronic databases to combine terms to focus a search. (Unit 4 A Primer on Databases and Catalogs)
Boolean operators are words that are used to combine search terms to produce better, more specific results. And narrows a search by requiring that both search term A and search term B are included in each result. Or widens a search by returning results that either have search term A or search term B. Not limits a search by specifying that term B cannot be included in the results. Boolean operators can be used to combine more than two terms. http://www.internettutorials.net/boolean.html Shows you how to use Boolean operators and the difference they make in a search http://www.library.kent.edu/page/10663 Kent's Boolean operator page http://www.transitioning2college.org/additional_resources.html#booleanConnectors T2C web sites
Used in search statements to combine search terms. Usual operators are AND, OR, and NOT.
A search modifier used to refine the relationship between your search term(s). The three major Boolean operators are AND, OR and NOT.
words such as AND, OR, and NOT that are called "logical operators" and are used to combine search terms to either broaden or narrow the retrieval results of a search. Boolean Searching describes the method of searching in which terms are combined to either recall more documents or to retrieve a more precise set of documents.
the section called “Boolean operations
Words (e.g., AND/OR, NOT) that help focus an information search.
terms used to combine concepts in a logical order. The most commonly used Boolean operators are AND, OR, and NOT.
Search strategy for information retrieval based on the use of the logical operators AND (union), OR (intersection), NOT (complement), and XOR (exclusion) to represent symbolic relationships.
Also called Search Operators, these are words that specify the relationship between two or more search terms when doing a keyword search within a database. AND . narrows your search by specifying that both terms must be found in the data record OR . broadens your search by specifying that either of the terms must be found in the data record NOT . narrows your search by specifying that one term of your search must not be present in the data record in conjunction with the other terms
The use of and, or, and not in relation to search terms, to define and refine the parameters of a search.
These are common words like and, not and or. They can be utilized to alter the parameters of a search by the insistence of either an inclusion or exclusion of other words in the documents or web pages targeted in the search query. ( See below).
The logical or algebraic operators formulated by 19th century British mathematician George Boole. Significance: You search databases using AND, OR and NOT. Example: (capital punishment or death penalty) and new york.
The words and, or, and not used in databases or search engines to relate the contents of two or more sets of data in different ways. When search terms are combined with and, the search results contain only those items that include all the terms. When or is used, the results include items that contain any one of the terms. Not is used to exclude items containing a term. up to directory
The connectors and, or, and not, used when searching on computerized indexes, such as InfoTrac.