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CIKM
2011
Springer
14 years 1 months ago
Tractable XML data exchange via relations
We consider data exchange for XML documents: given source and target schemas, a mapping between them, and a document conforming to the source schema, construct a target document a...
Rada Chirkova, Leonid Libkin, Juan L. Reutter
SIGMOD
2004
ACM
160views Database» more  SIGMOD 2004»
16 years 2 months ago
Extending Query Rewriting Techniques for Fine-Grained Access Control
Current day database applications, with large numbers of users, require fine-grained access control mechanisms, at the level of individual tuples, not just entire relations/views,...
Shariq Rizvi, Alberto O. Mendelzon, S. Sudarshan, ...
IJCAI
2003
15 years 3 months ago
A New Look at the Semantics and Optimization Methods of CP-Networks
Preference elicitation is a serious bottleneck in many decision support applications and agent specification tasks. CP-nets were designed to make the preference elicitation proces...
Ronen I. Brafman, Yannis Dimopoulos
ADBIS
2009
Springer
162views Database» more  ADBIS 2009»
15 years 6 months ago
Efficient Set Similarity Joins Using Min-prefixes
Identification of all objects in a dataset whose similarity is not less than a specified threshold is of major importance for management, search, and analysis of data. Set similari...
Leonardo Ribeiro, Theo Härder
ICDE
1999
IEEE
101views Database» more  ICDE 1999»
16 years 3 months ago
Index Merging
Indexes play a vital role in decision support systems by reducing the cost of answering complex queries. A popular methodology for choosing indexes that is adopted by database adm...
Surajit Chaudhuri, Vivek R. Narasayya