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Niu, Xing; Glavic, Boris; Liu, Ziyu; Li, Pengyuan; Gawlick, Dieter; Krishnaswamy, Vasudha; Liu, Zhen Hua; Porobic, Danica (, Proceedings of the VLDB Endowment)Database systems use static analysis to determine upfront which data is needed for answering a query and use indexes and other physical design techniques to speed-up access to that data. However, for important classes of queries, e.g., HAVING and top-k queries, it is impossible to determine up-front what data is relevant. To overcome this limitation, we develop provenance-based data skipping (PBDS), a novel approach that generates provenance sketches to concisely encode what data is relevant for a query. Once a provenance sketch has been captured it is used to speed up subsequent queries. PBDS can exploit physical design artifacts such as indexes and zone maps.more » « less
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Trabucco, Juan Trelles; Li, Pengyuan; Arighi, Cecilia; Shatkay, Hagit; Marai, G. Elisabeta (, 2020 IEEE International Conference on Bioinformatics and Biomedicine (BIBM))
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Zhang, Gongbo; Bhattacharya, Moumita; Wu, Heng-Yi; Li, Pengyuan; Li, Lang; Shatkay, Hagit (, The IEEE International Conference on Bioinformatics and Biomedicine)
