Data Mapping

What Does Data Mapping Mean?

Data mapping is a process used in data warehousing by which different data models are linked to each other using a defined set of methods to characterize the data in a specific definition. This definition can be any atomic unit, such as a unit of metadata or any other semantic. This data linking follows a set of standards, which depends on the domain value of the data model used.


Data mapping serves as the initial step in data integration.

Techopedia Explains Data Mapping

Data mapping can be applied in several ways using procedural codes, Extensible Style Sheet Language Transformation and other existing graphical interfaces. The technique involves evaluating data values in different data sources, as well as automatically and simultaneously discovering complex mappings between the sets. Data mapping is also used to consolidate multiple databases into a single database.


Related Terms

Margaret Rouse

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.