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XSYM
2004
Springer
129views Database» more  XSYM 2004»
15 years 6 months ago
Fractional XSketch Synopses for XML Databases
A key step in the optimization of declarative queries over XML data is estimating the selectivity of path expressions, i.e., the number of elements reached by a specific navigatio...
Natasha Drukh, Neoklis Polyzotis, Minos N. Garofal...
BTW
2003
Springer
103views Database» more  BTW 2003»
15 years 6 months ago
XPath-Aware Chunking of XML-Documents
Dissemination systems are used to route information received from many publishers individually to multiple subscribers. The core of a dissemination system consists of an efficient...
Wolfgang Lehner, Florian Irmert
VLDB
2005
ACM
125views Database» more  VLDB 2005»
15 years 6 months ago
Rewriting XPath Queries Using Materialized Views
As a simple XML query language but with enough expressive power, XPath has become very popular. To expedite evaluation of XPath queries, we consider the problem of rewriting XPath...
Wanhong Xu, Z. Meral Özsoyoglu
100
Voted
VLDB
2004
ACM
101views Database» more  VLDB 2004»
15 years 6 months ago
Taming XPath Queries by Minimizing Wildcard Steps
This paper presents a novel and complementary technique to optimize an XPath query by minimizing its wildcard steps. Our approach is based on using a general composite axis called...
Chee Yong Chan, Wenfei Fan, Yiming Zeng
100
Voted
VLDB
2004
ACM
96views Database» more  VLDB 2004»
15 years 6 months ago
Answering XPath Queries over Networks by Sending Minimal Views
When a client submits a set of XPath queries to a XML database on a network, the set of answer sets sent back by the database may include redundancy in two ways: some elements may...
Keishi Tajima, Yoshiki Fukui