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» Metadata management and relational databases
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WEBDB
2009
Springer
100views Database» more  WEBDB 2009»
15 years 4 months ago
Towards Well-Behaved Schema Evolution
We study the problem of schema evolution in the RDF data model. RDF and the RDFS schema language are W3C standards for flexibly modeling and sharing data on the web. Although sch...
Rada Chirkova, George H. L. Fletcher
PODS
2009
ACM
134views Database» more  PODS 2009»
15 years 10 months ago
Equivalence of nested queries with mixed semantics
We consider the problem of deciding query equivalence for a conjunctive language in which queries output complex objects composed from a mixture of nested, unordered collection ty...
David DeHaan
WIDM
2003
ACM
15 years 3 months ago
Answering imprecise database queries: a novel approach
A growing number of databases especially those published on the Web are becoming available to external users. Users of these databases are provided simple form-based query interfa...
Ullas Nambiar, Subbarao Kambhampati
EDBT
2006
ACM
117views Database» more  EDBT 2006»
15 years 1 months ago
Model-Independent Schema and Data Translation
Abstract. We describe MIDST, an implementation of the model management operator ModelGen, which translates schemas from one model to another, for example from OO to SQL or from SQL...
Paolo Atzeni, Paolo Cappellari, Philip A. Bernstei...
ICSE
2008
IEEE-ACM
15 years 10 months ago
Impact analysis of database schema changes
We propose static program analysis techniques for identifying the impact of relational database schema changes upon object-oriented applications. We use dataflow analysis to extra...
Andy Maule, Wolfgang Emmerich, David S. Rosenblum