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CIKM
2009
Springer

Group-by skyline query processing in relational engines

10 years 10 months ago
Group-by skyline query processing in relational engines
The skyline operator was first proposed in 2001 for retrieving interesting tuples from a dataset. Since then, 100+ skyline-related papers have been published; however, we discovered that one of the most intuitive and practical type of skyline queries, namely, groupby skyline queries remains unaddressed. Group-by skyline queries find the skyline for each group of tuples. In this paper, we present a comprehensive study on processing group-by skyline queries in the context of relational engines. Specifically, we examine the composition of a query plan for a group-by skyline query and develop the missing cost model for the BBS algorithm. Experimental results show that our techniques are able to devise the best query plans for a variety of group-by skyline queries. Our focus is on algorithms that can be directly implemented in today’s commercial database systems without the addition of new access methods (which would require addressing the associated challenges of maintenance with upd...
Ming-Hay Luk, Man Lung Yiu, Eric Lo
Added 26 May 2010
Updated 26 May 2010
Type Conference
Year 2009
Where CIKM
Authors Ming-Hay Luk, Man Lung Yiu, Eric Lo
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