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Encyclopedia of Database Systems pp 4756–4761Cite as

XML Integrity Constraints

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Synonyms

XML data dependencies

Definition

An XML integrity constraint specifies a semantic restriction over the data stored in an XML document. A number of integrity constraint languages have been proposed for XML, which can be used to enforce different types of semantic restrictions. These proposals, together with some languages for specifying restrictions on the element structure of XML documents (e.g., DTD and XML Schema), are used to specify the schema of XML documents.

Historical Background

The problem of defining and manipulating integrity constraints is one of the oldest problems in databases. Soon after the introduction of the relational model by Codd in the 1970s, researchers developed several languages for specifying integrity constraints, and studied many fundamental problems for these languages.

In the relational model, a database is viewed as a collection of relations or tables. For instance, a relational database storing information about courses in a university is shown...

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Recommended Reading

  1. Fan W, Siméon J. Integrity constraints for XML. In: Proceedings of the 19th ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems; 2000. p. 23–34.

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  2. Fan W, Libkin L. On XML integrity constraints in the presence of DTDs. J ACM. 2002;49(3):368–406.

    Article  MathSciNet  MATH  Google Scholar 

  3. Arenas M, Fan W, Libkin L. On the complexity of verifying consistency of XML specifications. SIAM J Comput. 2008;38(3):841–80.

    Article  MathSciNet  MATH  Google Scholar 

  4. Buneman P, Davidson S, Fan W, Hara C, Tan WC. Reasoning about keys for XML. In: Proceedings of the 8th International Workshop on Database Programming Languages; 2001. p. 133–48.

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  5. Buneman P, Davidson S, Fan W, Hara C, Tan WC. Keys for XML. In: Proceedings of the 10th International World Wide Web Conference; 2001. p. 201–10.

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  6. Arenas M, Libkin L. A normal form for XML documents. In: Proceedings of the 21st ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems; 2002. p. 85–96.

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  7. Abiteboul S, Vianu V. Regular path queries with constraints. In: Proceedings of the 16th ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems; 1997. p. 122–33.

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  8. Buneman P, Fan W, Weinstein S. Path constraints in semistructured and structured databases. In: Proceedings of the 17th ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems; 1998. p. 129–38.

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Author information

Authors and Affiliations

  1. Pontifical Catholic University of Chile, Santiago, Chile

    Marcelo Arenas

Authors
  1. Marcelo Arenas
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Corresponding author

Correspondence to Marcelo Arenas .

Editor information

Editors and Affiliations

  1. Georgia Institute of Technology College of Computing, Atlanta, GA, USA

    Ling Liu

  2. University of Waterloo School of Computer Science, Waterloo, ON, Canada

    M. Tamer Özsu

Section Editor information

  1. Laboratoire d’Informatique de Grenoble, CNRS and LIG, Grenoble, France

    Sihem Amer-Yahia

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Arenas, M. (2018). XML Integrity Constraints. In: Liu, L., Özsu, M.T. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8265-9_787

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