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    AMW
    2009
    182views Knowledge Management» more  AMW 2009»
    Data Expiration and Aggregate Queries
    15 years 21 days ago
    Data Expiration and Aggregate Queries
    Download  sunsite.informatik.rwth-aachen.de
    We investigate the space requirements for summaries needed for maintaining exact answers to aggregate queries over histories of relational databases. We show that, in general, a su...
    David Toman
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