Transaction

Transaction - 1) The fundamental unit of change in many (transaction-oriented) databases. A single transaction may involve changes in several tables, all of which must be made simultaneously in order for the database to be internally consistent and correct.

2) A real-life event which is modeled by the changes to the database; 3) The sequence of SQL statements whose effect is not accessible to other transactions until all of its statements have been executed.

[Category=Database Management ]

Source: Northwest Database Services, 15 November 2009 12:05:53, http://www.nwdatabase.com/database-glossary-t.htm

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Transaction - The occurrence of two or more related actions which result in a transfer from one party to another, or from each party to the other. Transactions include order entry, point of sale exchanges, teller machines, etc.

[Category=Data Warehousing ]

Source: Sun.com, 12 August 2010 10:40:04, http://www.sun.com/third-party/dw/brochures/67198.Acrobat.pdf

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transaction - [computing] A group of data operations that comprise a complete operational task, such as inserting a row into a table.

[Category=Geospatial ]

Source: esri, 16 September 2012 08:53:54, http://support.esri.com/en/knowledgebase/GISDictionary/term/abbreviation