From Temporal Databases to Ontology Versioning

In computer science, several application areas are especially concerned with versioning such as software development, CAD/CAM applications, temporal databases and ontologies. Temporal databases support time-varying information and maintain the history of the modelled data (Jensen et al., 1998) (Özsoyoğlu et al., 1995) (Tansel et al., 1993). Versions of temporal data are kept along one or two time dimensions: valid time and transaction time (Jensen et al., 1998). The valid time concerns the time of the modelled real world and denotes the time a fact was, or will be true, whereas the transaction time is the one of the system and concerns the one during which the fact was or is current in the database as a stored data. AbsTRACT