Reasoning about XML update constraints

  • Authors:
  • Bogdan Cautis;Serge Abiteboul;Tova Milo

  • Affiliations:
  • U. Paris Sud;U. Paris Sud;Tel Aviv U.

  • Venue:
  • Proceedings of the twenty-sixth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
  • Year:
  • 2007

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Abstract

We introduce in this paper a class of constraints for describing howan XML document can evolve, namely XML update constraints. For these constraints, we study the implication problem, giving algorithms and complexity results for constraints of varying expressive power. Besides classical constraint implication, we also consider an instance-based approach. More precisely, we study implication with respect to a current tree instance, resulting from a series of unknown updates. The main motivation of our work is reasoning about data integrity under update restrictions in contexts where owners may lose control over their data, such as in publishing or exchange.