CONTINUOUS DATA PROTECTION

Abstract: changes made to a database table are accumulated, in durable storage, and snapshots of partitions of the table are obtained. for successive snapshots of a partition, the system accesses a previous snapshot, applies changes from the accumulated changes, and stores the updated snapshot to a durable data store. the accumulated changes and the successive partition snapshots are made available to restore the database to any point in time across a continuum between successive snapshots. although each partition of the table may have a backup snapshot that was generated at a time different from when other partition snapshots were generated, changes from respective change logs may be selectively log-applied to distinct partitions of a table to generate an on-demand backup of the entire table at common point-in-time across partitions. point-in-time restores of a table may rely upon a similar process to coalesce partition snapshots that are not aligned in time.

Inventor(s): Akshat Vig, Tate Andrew Certain, Go Hori

CPC Classification: G06F11/1451 ({by selection of backup contents})

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