ROX: Run-Time Optimization of XQueries

Abstract

Optimization of complex XQueries combining many XPath steps and joins is currently hindered by the absence of good cardinality estimation and cost models for XQuery. Additionally, the state-of-the-art of even relational query optimization still struggles to cope with cost model estimation errors that increase with plan size, as well as with the effect of… (More)
DOI: 10.1145/1559845.1559910
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