• Publications
  • Influence
A cost-based model and effective heuristic for repairing constraints by value modification
TLDR
We define a database repair as a set of value modifications. Expand
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Secure XML querying with security views
TLDR
The prevalent use of XML highlights the need for a generic, flexible access-control mechanism for XML documents that supports efficient and secure query access, without revealing sensitive information unauthorized users. Expand
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Conditional Functional Dependencies for Data Cleaning
TLDR
We propose a class of constraints, referred to as conditional functional dependencies (CFDs), and study their applications in data cleaning. Expand
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Improving Data Quality: Consistency and Accuracy
TLDR
We propose two algorithms for automatically computing a repair D' that satisfies a given set of CFDs. Expand
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Conditional functional dependencies for capturing data inconsistencies
TLDR
We propose a class of integrity constraints for relational databases, referred to as conditional functional dependencies (CFDs), and study their applications in data cleaning. Expand
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XPath satisfiability in the presence of DTDs
TLDR
We study the satisfiability problem associated with XPath in the presence of DTDs. Expand
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Graph pattern matching
TLDR
We propose a revision of graph pattern matching, based on a class of graph patterns, in which an edge denotes the connectivity in a data graph within a predefined number of hops. Expand
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Reasoning about Record Matching Rules
TLDR
We introduce a class of matching dependencies (MDs) for specifying the semantics of data in unreliable relations, defined in terms of similarity metrics and a dynamic semantics. 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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Towards certain fixes with editing rules and master data
TLDR
We propose a method for finding certain fixes, based on master data, a notion of certain regions, and a class of editing rules. Expand
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