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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 [[Timestamp|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|date=March 2023}} The concept of ''now'' is discussed in Clifford [[et alia]] (1997).<ref>{{cite book |last=Karagiannis |first=Dimitris |date=1994-08-24 |title=Database and Expert Systems Applications: 5th International Conference, DEXA'94, Athens, Greece, September 7 - 9, 1994. Proceedings |publisher=Springer Science & Business Media |isbn=978-3-540-58435-3 |url=https://books.google.com/books?id=0eIyGy4dU1YC&q=current+database+is+a+conventional+database&pg=PA259}}</ref>

==References==
{{Reflist}}

==External links==
*{{cite journal |last1=Clifford |first1=J. |last2=Dyreson |first2=C. |last3=Isakowitz |first3=T. |last4=Jensen |first4=C. S. |last5=Snodgrass |first5=R. T. |year=1997 |title=On the semantics of 'now' in databases |journal=ACM Transactions on Database Systems |doi=10.1145/249978.249980 |citeseerx=10.1.1.112.7301 |s2cid=1879036 |volume=22 |issue=2}}

[[Category:Types of databases]]

Current database - Revision history

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