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FOIKS
2010
Springer
13 years 11 months ago
On the Existence of Armstrong Data Trees for XML Functional Dependencies
Armstrong databases are a popular tool in example-based database design. An Armstrong database for a given constraint set from a fixed constraint class Z satisfies precisely those ...
Sven Hartmann, Henning Köhler, Thu Trinh
FQAS
2006
Springer
186views Database» more  FQAS 2006»
13 years 11 months ago
Project-Join-Repair: An Approach to Consistent Query Answering Under Functional Dependencies
Consistent query answering is the term commonly used for the problem of answering queries on databases that violate certain integrity constraints. We address this problem for univ...
Jef Wijsen
WEBDB
2004
Springer
202views Database» more  WEBDB 2004»
14 years 28 days ago
Mining Approximate Functional Dependencies and Concept Similarities to Answer Imprecise Queries
Current approaches for answering queries with imprecise constraints require users to provide distance metrics and importance measures for attributes of interest. In this paper we ...
Ullas Nambiar, Subbarao Kambhampati
XSYM
2005
Springer
107views Database» more  XSYM 2005»
14 years 1 months ago
Checking Functional Dependency Satisfaction in XML
Recently, the issue of functional dependencies in XML (XFDs) have been investigated. In this paper we consider the problem of checking the satisfaction of an XFD in an XML document...
Millist W. Vincent, Jixue Liu
ER
2006
Springer
137views Database» more  ER 2006»
13 years 11 months ago
Preference Functional Dependencies for Managing Choices
Abstract. The notion of user preference in database modeling has recently received much attention in advanced applications, such as personalization of e-services, since it captures...
Wilfred Ng