• Publications
  • Influence
Why and Where: A Characterization of Data Provenance
TLDR
We propose a syntactic approach to computing provenance when the data of interest has been created by a database query. Expand
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Composing Schema Mappings: Second-Order Dependencies to the Rescue
TLDR
We give a rigorous semantics to the composition of schema mappings in which the specification is given by a finite set of source-to-target tuple-generating dependencies and investigate the definability and computational complexity of the composition. Expand
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Provenance in Databases: Why, How, and Where
TLDR
Provenance in Databases: Why, How, and Where James Cheney, Laura Chiticariu and Wang-Chiew Tan compare and contrast amongst them. Expand
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An annotation management system for relational databases
TLDR
We present an annotation management system for relational databases where annotations may be attached to a piece of data and are transparently carried along as data is being transformed. Expand
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STBenchmark: towards a benchmark for mapping systems
TLDR
A fundamental problem in information integration is to precisely specify the relationships, called mappings, between schemas. Expand
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Keys for XML
TLDR
We discuss the definition of keys for XML documents, paying particular attention to the concept of a relative key , which is commonly used in hierarchically structured documents. Expand
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On propagation of deletions and annotations through views
TLDR
We study two classes of view update problems in relational databases. Expand
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Keys for XML
TLDR
We discuss the definition of keys for XML documents, paying particular attention to the concept of a relative key, which is commonly used in hierarchically structured documents and scientific databases. Expand
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Reasoning about keys for XML
TLDR
We study absolute and relative keys for XML, and investigate their associated decision problems. Expand
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SilkRoute: trading between relations and XML
TLDR
We describe SilkRoute, a general , dynamic , and efficient tool for viewing and querying relational data in XML. Expand
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