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, if a user inputs "John Smith" into the Staff table of an existing database, this confirms that the fact is current and will remain so until it is later deleted. In contrast, in a temporal database, each row has a valid timestamp, time period, or time interval.