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SIGMOD
2003
ACM
147views Database» more  SIGMOD 2003»
16 years 3 months ago
Formal semantics and analysis of object queries
Modern database systems provide not only powerful data models but also complex query languages supporting powerful features such as the ability to create new database objects and ...
Gavin M. Bierman
EDBT
2002
ACM
128views Database» more  EDBT 2002»
16 years 3 months ago
An Approach to Integrating Query Refinement in SQL
With the emergence of applications that require content-based similarity retrieval, techniques to support such a retrieval paradigm over database systems have emerged as a critica...
Michael Ortega-Binderberger, Kaushik Chakrabarti, ...
VLDB
1999
ACM
87views Database» more  VLDB 1999»
15 years 8 months ago
Query Optimization for XML
XML is an emerging standard for data representation and exchange on the World-Wide Web. Due to the nature of information on the Web and the inherent flexibility of XML, we expect...
Jason McHugh, Jennifer Widom
VLDB
1991
ACM
196views Database» more  VLDB 1991»
15 years 7 months ago
Kaleidoscope Data Model for An English-like Query Language
Most database interfaces provide poor guidance on ad hoc query formulation, burdening users to learn, and to recall precisely the query language and the database. Kaleidoscope avo...
Sang Kyun Cha, Gio Wiederhold
ICDT
2010
ACM
194views Database» more  ICDT 2010»
15 years 5 months ago
Bag Equivalence of XPath Queries
When a query is evaluated under bag semantics, each answer is returned as many times as it has derivations. Bag semantics has long been recognized as important, especially when ag...
Sara Cohen, Yaacov Y. Weiss