lookup column

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• Lookup — In computing, lookup usually refers to searching a data structure for an item that satisfies some specified property . For example, variable lookup performed by a (scripting) language interpreter, virtual machine or other similar engine usually… …   Wikipedia

• Control table — This simple control table directs program flow according to the value of the single input variable. Each table entry holds a possible input value to be tested for equality (implied) and a relevant subroutine to perform in the action column. The… …   Wikipedia

• Extract, transform, load — Extract, transform and load (ETL) is a process in database usage and especially in data warehousing that involves: Extracting data from outside sources Transforming it to fit operational needs (which can include quality levels) Loading it into… …   Wikipedia

• Multiplication algorithm — A multiplication algorithm is an algorithm (or method) to multiply two numbers. Depending on the size of the numbers, different algorithms are in use. Efficient multiplication algorithms have existed since the advent of the decimal system.… …   Wikipedia

• Index (information technology) — This is referring to Index in the context of Information Technology. For other meanings, see Index. In computer science, an index can be: # an integer which identifies an array element # a pointer data element. # a data structure that enables… …   Wikipedia

• Direct digital synthesis — (DDS) is an electronic method for digitally creating arbitrary waveforms and frequencies from a single, fixed source frequency. OverviewA basic DDS circuit consists of an electronic controller, a random access memory, a frequency reference… …   Wikipedia

• Advanced Encryption Standard — Infobox block cipher name = AES caption = The SubBytes step, one of four stages in a round of AES designers = Vincent Rijmen, Joan Daemen publish date = 1998 derived from = Square derived to = Anubis, Grand Cru related to = certification = AES… …   Wikipedia

• SQL Server Integration Services — (SSIS) is a component of Microsoft SQL Server 2005 and 2008. It replaces Data Transformation Services, which has been a feature of SQL Server since Version 7.0. Unlike DTS, which was included in all versions, SSIS is available in the Standard ,… …   Wikipedia

• Mechanical calculator — An old Russian mechanical calculator. A mechanical calculator is a device used to perform the basic operations of arithmetic. Mechanical calculators are comparable in size to small desktop computers and have been rendered obsolete by the advent… …   Wikipedia

• Chinese telegraph code — The Chinese Telegraph Code, Chinese Telegraphic Code, or Chinese Commercial Code (simplified Chinese: 中文电码; traditional Chinese: 中文電碼; pinyin: Zhōngwén diànmǎ or simplified Chinese: 中文电报码; traditional Chinese: 中文電報碼; pinyin: Zhōngwén… …   Wikipedia

• List of typographic features — State of the art digital typographic systems have solved virtually all the demands of traditional typography and have expanded the possibilities with many new features. The two lists below provide information about many features Contents 1… …   Wikipedia