| 摘要 |
<p>A system and method for selectively viewing temporal row data in a consistent read-implemented database are described. Committed transactions effecting row data changes to a database are tracked and a stored system change number is assigned upon each committed transaction. A queried selection of row data values from the database is performed as of a query time occurring prior to the commit time of at least one committed transaction. The ordered row data values contained in the rollback segments storing a transaction identifier for at least one committed transaction are retrieved.</p> |
