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스냅샷 데이터를 갖는 다중 레벨 저장 시스템에서의 효율적인 리프레시 기법
주붕 ( Peng-zhou ),어상훈 ( Sang-hun Eo ),김명근 ( Myoung-keum Kim ),조숙경 ( Sook-kyoung Cho ),배해영 ( Hae-young Bae ) 한국정보처리학회 2005 한국정보처리학회 학술대회논문집 Vol.12 No.1
In multi-level storage system with snapshot data, some snapshots which are from selection portions of the base tables are kept in main memory. So how to efficiently refresh snapshots in response to changes on their base tables for preserving consistency which requires snapshots reflect the current state of the base tables referenced by the snapshot query is a very import research issue. In this paper, a method for efficiently refreshing snapshots is proposed. In this method, it uses a data structure to store metadata which contains some necessary information of every snapshot and an updating log that records the history of changes on its base tables. Synchronization process scans the metadata and refreshing process is executed using appropriate logs after it finds anyone of the snapshot need to be refreshed.