Titlebook: Database Theory - ICDT 2003; 9th International Co Diego Calvanese,Maurizio Lenzerini,Rajeev Motwani Conference proceedings 2003 Springer-Ve

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Auditing Sum Queries data. To check that, every sum query and previously answered sum queries should be audited. We show that, under a suitable query-overlap restriction, an auditing procedure can be efficiently worked out using flownetwork computation.

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CRB-Tree: An Efficient Indexing Scheme for Range-Aggregate Queriesllows: Given a set of weighted points in R., compute the aggregate of weights of points that lie inside a .-dimensional query rectangle. In this paper we focus on range-COUNT, SUM, AVG aggregates. First, we develop an indexing scheme for answering two-dimensional range-COUNT queries that uses. disk

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Optimal Range Max Datacube for Fixed Dimensionse . ≤ .. log log ./ log(log* .), our structure requires .(...) query time and .((..n).) storage where .., .. and .. are constants independent of . and .; and log* . is the minimum number of repeated logarithms it takes to reduce the value . to at most 2. Hence our data structure is asymptotically op

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