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AssigneesAT&T Corp., Lucent Technologies Inc.
InventorsAlexandros Biliris, Hosagrahar Visvesvaraya Jagadish, Euthimios Panagos, Rajeev R. Rastogi
Estimating the term…
A distributed database management computer system includes a plurality of nodes and a plurality of database pages. When a first node in the computer system updates a first database page, the first node generates a log record. The first node determines whether it manages the first database page. If the first node determines that it manages the first database page, the first node writes the log record to a log storage local to the first node. However, if the first node determines that it does not manage the first database page, the first node then determines whether it includes a local log storage. If the first node includes a local log storage, the first node writes the log record to the local log storage, even if the first node does not manage the first database page. If the first node does not include a local log storage, the first node sends the log record to a second node managing the first database page.
A method of operating a first node in a distributed database management computer system having a first set of database pages managed by the first node and a second set of database pages managed by a second node, wherein said first node can update pages in the first and second set, comprising the steps of:
A first node in a distributed database management computer system having a first set of database pages managed by the first node and a second set of database pages managed by a second node, wherein said first node can update pages in the first and second set, comprising:
Dependencies are inferred from the claim text.