Patent ID: 11868340
Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 13:
14. The non-transitory machine-readable medium of claim 13, wherein the operations further comprise:
identifying a group of updates in the source table update log that are completely covered by a source time range between the lower limit timestamp and the upper limit timestamp, which corresponds to the derived time range of the derived table having timestamps between the lower limit time and the upper limit time;
deleting records in the derived table corresponding to the derived time range;
in response to inverting the invertible relationship, determining a range of timestamps of first records of the source table that is able to contribute to second records of the derived table associated with the derived time range; and
generating a non-materialized view query over the source table that selects the source time range.