Equivalence of datalog queries is undecidable
Journal of Logic Programming
Your mediators need data conversion!
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
Catching the boat with Strudel: experiences with a Web-site management system
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
Communications of the ACM
Verification of knowledge bases based on containment checking
Artificial Intelligence
Design and Maintenance of Data-Intensive Web Sites
EDBT '98 Proceedings of the 6th International Conference on Extending Database Technology: Advances in Database Technology
Information Integration Using Logical Views
ICDT '97 Proceedings of the 6th International Conference on Database Theory
WebOQL: Restructuring Documents, Databases, and Webs
ICDE '98 Proceedings of the Fourteenth International Conference on Data Engineering
EDBT '98 Proceedings of the 6th International Conference on Extending Database Technology: Advances in Database Technology
Adaptive web sites: an AI challenge
IJCAI'97 Proceedings of the 15th international joint conference on Artifical intelligence - Volume 1
Data Integration under Integrity Constraints
CAiSE '02 Proceedings of the 14th International Conference on Advanced Information Systems Engineering
Synthesis of Web Sites from High Level Descriptions
Web Engineering, Software Engineering and Web Application Development
Static Consistency Checking for Distributed Specifications
Proceedings of the 16th IEEE international conference on Automated software engineering
Declarative specification of data-intensive web sites
DSL'99 Proceedings of the 2nd conference on Conference on Domain-Specific Languages - Volume 2
A fast algebraic web verification service
RR'07 Proceedings of the 1st international conference on Web reasoning and rule systems
Verifying the consistency of web-based technical documentations
Journal of Symbolic Computation
Containment of conjunctive queries over databases with null values
ICDT'07 Proceedings of the 11th international conference on Database Theory
RW'07 Proceedings of the Third international summer school conference on Reasoning Web
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Data-intensive Web sites have created a new form of knowledge base, as richly structured bodies of data. Several novel systems for creating data-intensive Web sites support declarative specification of a site's structure and content (i.e., the pages, the data available in each page, and the links between pages). Declarative systems provide a platform on which A1 techniques can be developed that, further simplify the tasks of constructing and maintaining Web sites. This paper addresses the problem of specifying and verifying integrity constraints on a Web site's structure. We describe a language that can capture many practical constraints and an accompanying sound and complete verification algorithm. The algorithm has the important property that if the constraints are violated, it proposes fixes to either the constraints or to the site definition. Finally, we establish tight bounds on the complexity of the verification problem we consider.