A current database is a conventional database that stores valid data. For example, if a user inserts "John Smith" into the Staff table of a current database, this asserts that the fact is valid now and until it is subsequently deleted. By contrast, a temporal database qualifies each row with a valid time stamp, valid time period or valid time interval. For example, we can assert the fact that "John Smith" was a member of staff during the period 1 June 2001 and now. As of 2006, current databases were the most common type of database in use. The concept of now is discussed in Clifford et alia (1997).
References
External links Clifford, J.; Dyreson, C.; Isakowitz, T.; Jensen, C. S.; Snodgrass, R. T. (1997). "On the semantics of 'now' in databases". ACM Transactions on Database Systems. 22 (2). CiteSeerX 10.1.1.112.7301. doi:10.1145/249978.249980. S2CID 1879036. {{cite journal}}: Cite uses deprecated parameter |citeseerx= (help)