In the context of the where or on clause, the keywords and, or, and not are part of the predicate that filters rows. In the context of optimization, this describes an operation in query processing without specifying a specific algorithm, such as join, scan, sort.
The Boolean operations such as AND, OR etc. Macro A program written using applications software tools to automate a sequence of keystrokes or events. Simplified ways of creating such programs are often provided.
The three Boolean operators AND, OR, and NOT that gather or separate things into neat piles depending on how you use them. Cams uses logical operators between, and in some cases preceding, access control rules.
Generally, and or not & xor. and serves as the term of logical conjunction; or serves as the term of logical inclusion; not serves as the term of logical negation; xor includes all items with one search word but not items with both words. In some databases logical operators will be expressed by symbols (for or; & for and; &! for not), the searcher will be required to present the logical operator in upper case (eg OR) in order for it to perform properly, or the database may have a default operator.
A symbol linking two or more terms in a search query; logical operators most widely used are "and", "or" and "not", the so called Boolean operators, after the english mathematician George Boole (1815-1864), who invented the Boolean algebra, the basis of all modern computer science.
Also called Boolean operator after George Boole, an English logician and mathematician. A word (OR, AND or NOT) used with an online search command to establish a relationship between two words or phrases. Logical operators may also be expressed in a computer command with punctuation (a comma, for example) or spacing or placement of search terms.