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  1. Transactions on Database Systems (TODS)
  2. ACM Transactions on Database Systems (TODS) : Volume 39
  3. Issue 4(Invited Articles Issue, SIGMOD 2013, PODS 2013 and ICDT 2013), December 2014
  4. Discovering XSD Keys from XML Data
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ACM Transactions on Database Systems (TODS) : Volume 42
ACM Transactions on Database Systems (TODS) : Volume 41
ACM Transactions on Database Systems (TODS) : Volume 40
ACM Transactions on Database Systems (TODS) : Volume 39
Issue 4(Invited Articles Issue, SIGMOD 2013, PODS 2013 and ICDT 2013), December 2014
Foreword to Invited Articles Issue
I/O-Efficient Algorithms on Triangle Listing and Counting
Discovering XSD Keys from XML Data
A Scalable Lock Manager for Multicores
Lightweight Query Authentication on Streams
Naïve Evaluation of Queries over Incomplete Databases
The Complexity of Mining Maximal Frequent Subgraphs
Ontology-Based Data Access: A Study through Disjunctive Datalog, CSP, and MMSNP
A Theory of Pricing Private Data
Top-k and Clustering with Noisy Comparisons
Issue 3, September 2014
Issue 2, May 2014
Issue 1, January 2014
ACM Transactions on Database Systems (TODS) : Volume 38
ACM Transactions on Database Systems (TODS) : Volume 37
ACM Transactions on Database Systems (TODS) : Volume 36
ACM Transactions on Database Systems (TODS) : Volume 35
ACM Transactions on Database Systems (TODS) : Volume 34
ACM Transactions on Database Systems (TODS) : Volume 33
ACM Transactions on Database Systems (TODS) : Volume 32
ACM Transactions on Database Systems (TODS) : Volume 31
ACM Transactions on Database Systems (TODS) : Volume 30
ACM Transactions on Database Systems (TODS) : Volume 29
ACM Transactions on Database Systems (TODS) : Volume 28
ACM Transactions on Database Systems (TODS) : Volume 27
ACM Transactions on Database Systems (TODS) : Volume 26
ACM Transactions on Database Systems (TODS) : Volume 25
ACM Transactions on Database Systems (TODS) : Volume 24
ACM Transactions on Database Systems (TODS) : Volume 23
ACM Transactions on Database Systems (TODS) : Volume 22
ACM Transactions on Database Systems (TODS) : Volume 21
ACM Transactions on Database Systems (TODS) : Volume 20
ACM Transactions on Database Systems (TODS) : Volume 19
ACM Transactions on Database Systems (TODS) : Volume 18
ACM Transactions on Database Systems (TODS) : Volume 17
ACM Transactions on Database Systems (TODS) : Volume 16
ACM Transactions on Database Systems (TODS) : Volume 15
ACM Transactions on Database Systems (TODS) : Volume 14
ACM Transactions on Database Systems (TODS) : Volume 13
ACM Transactions on Database Systems (TODS) : Volume 12
ACM Transactions on Database Systems (TODS) : Volume 11
ACM Transactions on Database Systems (TODS) : Volume 10
ACM Transactions on Database Systems (TODS) : Volume 9
ACM Transactions on Database Systems (TODS) : Volume 8
ACM Transactions on Database Systems (TODS) : Volume 7
ACM Transactions on Database Systems (TODS) : Volume 6
ACM Transactions on Database Systems (TODS) : Volume 5
ACM Transactions on Database Systems (TODS) : Volume 4
ACM Transactions on Database Systems (TODS) : Volume 3
ACM Transactions on Database Systems (TODS) : Volume 2
ACM Transactions on Database Systems (TODS) : Volume 1

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Discovering XSD Keys from XML Data

Content Provider ACM Digital Library
Author Vansummeren, Stijn Neven, Frank Ugarte, Martin Bussche, Jan Van Den Arenas, Marcelo Daenen, Jonny
Copyright Year 2014
Abstract A great deal of research into the learning of schemas from XML data has been conducted in recent years to enable the automatic discovery of XML schemas from XML documents when no schema or only a low-quality one is available. Unfortunately, and in strong contrast to, for instance, the relational model, the automatic discovery of even the simplest of XML constraints, namely XML keys, has been left largely unexplored in this context. A major obstacle here is the unavailability of a theory on reasoning about XML keys in the presence of XML schemas, which is needed to validate the quality of candidate keys. The present article embarks on a fundamental study of such a theory and classifies the complexity of several crucial properties concerning XML keys in the presence of an XSD, like, for instance, testing for consistency, boundedness, satisfiability, universality, and equivalence. Of independent interest, novel results are obtained related to cardinality estimation of XPath result sets. A mining algorithm is then developed within the framework of levelwise search. The algorithm leverages known discovery algorithms for functional dependencies in the relational model, but incorporates the properties mentioned before to assess and refine the quality of derived keys. An experimental study on an extensive body of real-world XML data evaluating the effectiveness of the proposed algorithm is provided.
Starting Page 1
Ending Page 49
Page Count 49
File Format PDF
ISSN 03625915
e-ISSN 15574644
DOI 10.1145/2638547
Volume Number 39
Issue Number 4
Journal ACM Transactions on Database Systems (TODS)
Language English
Publisher Association for Computing Machinery (ACM)
Publisher Date 2014-12-30
Publisher Place New York
Access Restriction Subscribed
Subject Keyword XML key
Content Type Text
Resource Type Article
Subject Information Systems
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