Patent ID: 8688634
Filing Date: 2014-04-01
Classification: G06F

Abstract:
1. A computer-implemented method for providing convergence of multiple copies of a table to a same state in a database system, the database system including a plurality of nodes each having a corresponding copy of the table, the method comprising: for each row of each table copy, asynchronously capturing a change to a row of a given table copy from a database recovery log, the database recovery log containing an entry that describes the change to the row of the given table copy; determining that the captured change to the row of the given table copy is to be communicated to other table copies in the database system, the determination being made in accordance with the indication of the propagation controls associated with the changed row of the given table copy; communicating the captured change to the other table copies in the database system; and applying the communicated change to the other table copies in the database system, wherein each table copy in the database system converges to a same state, wherein applying the communicated change includes: