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Abstract : |
On the Internet, the limited query-processing capabilities of sources make answering even the simplest queries challenging. In this paper, we present a scheme called GenCompact for generating capability-sensitive plans for queries on Internet sources. The query plans generated by GenCompact have the followingadvantages over those generated by existing query-processing systems: (1) the sources are guaranteed to support the query plans; (2) the plans take advantage of the source capabilities; and (3) the plans are more efficient since a larger space of plans is examined. 1., |
