Current database

From HandWiki

A current database is a conventional database that stores data that is valid now.

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.[citation needed] The concept of now is discussed in Clifford et alia (1997).[1]

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). doi:10.1145/249978.249980.