Temporal databases are time enabled databases. This does have overlap to Oracle flashback query but it is mostly used in data warehouse reference where database has columns like effective_start_date, effective_end_date so that snapshot as of certain point in time can be constructed. Thanks, PB Singh Tech Project Manager Ph: 408 424 2777 Email: prsingh1@xxxxxxxxx ________________________________ From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Niall Litchfield Sent: Thursday, November 06, 2008 2:15 AM To: ORACLE-L Subject: Temporal Databases Nope, not a Star Trek - Voyager reference though it sounds like one, but something that our CEO was asked about by a customer. I have to confess to never having heard the term. Other than FlashBack Query/Data Archive has anyone any experience/understanding of this term as it relates to Oracle? -- Niall Litchfield Oracle DBA http://www.orawin.info