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» An Exploratory Study of Database Integration Processes
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SIGMOD
2008
ACM
127views Database» more  SIGMOD 2008»
13 years 7 months ago
Minimization of tree pattern queries with constraints
Tree pattern queries (TPQs) provide a natural and easy formalism to query tree-structured XML data, and the efficient processing of such queries has attracted a lot of attention. ...
Ding Chen, Chee Yong Chan
ICDE
2010
IEEE
202views Database» more  ICDE 2010»
14 years 7 months ago
Generating code for holistic query evaluation
We present the application of customized code generation to database query evaluation. The idea is to use a collection of highly efficient code templates and dynamically instantiat...
Konstantinos Krikellas, Marcelo Cintra, Stratis Vi...
XSYM
2004
Springer
109views Database» more  XSYM 2004»
14 years 1 months ago
Implementing Memoization in a Streaming XQuery Processor
In this paper, we describe an approach to boosting the performance of an XQuery engine by identifying and exploiting opportunities to share processing both within and across XML qu...
Yanlei Diao, Daniela Florescu, Donald Kossmann, Mi...
ESE
2000
61views Database» more  ESE 2000»
13 years 7 months ago
Requirements-Based Estimation of Change Costs
We present a case study that aims at quantitative assessment of the impact of requirements changes, and quantitative estimation of costs of the development activities that must be ...
Luigi Lavazza, Giuseppe Valetto
SIGMOD
2007
ACM
160views Database» more  SIGMOD 2007»
14 years 8 months ago
Supporting ranking and clustering as generalized order-by and group-by
The Boolean semantics of SQL queries cannot adequately capture the "fuzzy" preferences and "soft" criteria required in non-traditional data retrieval applicati...
Chengkai Li, Min Wang, Lipyeow Lim, Haixun Wang, K...