The process of combining or linking two or more data sets from various sources to facilitate data sharing, promote effective data gathering and communication, and support overall information management activities in an organization.

The combination of databases or data files from different functional units of an organization or from different organizations that collect information about the same entities (such as properties, census tracts, street segments). In combining the data, added intelligence is derived.

The process of combining two or more data sets together for sharing and analysis, in order to support information management inside a business.

data integrity

Data integration is the problem of combining data residing at different sources and providing the user with a unified view of these data . This important problem emerges in a variety of situations both commercial (when two similar companies need to merge their databases) and scientific (combining research results from different bioinformatics repositories). Data integration appears with increasing frequency as the volume and the need to share existing data explodes.