A schema-based approach to modeling and querying WWW data

Sara Comai, Ernesto Damiani, Roberto Posenato, Letizia Tanca

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

19 Scopus citations


The steady growth of the amount of data published on the World Wide Web has led to a number of attempts to provide effective Web querying, as a complement to conventional navigation techniques. In this paper, we propose to support WWW querying by specifying both logical and navigational aspects of a Web site through the unifying notion of schema. Schemata are a powerful tool for classifying and maintaining WWW data as well as for semantics-aware search on the Web. Moreover, schema availability is the basis for an effective flexible querying mechanism. Following the style of such languages as Good and G-Log, the WGLog language described in the paper uniformly represents site schemata, instances and queries as graphs. Gracefully supporting schemata that are huge or subject to change, WG-Log adequately represents data whose structure is less rigid than that of traditional databases; moreover, it allows for a uniform representation of flexible queries and views, the latter expressing customized access structures to the site information.

Original languageBritish English
Title of host publicationFlexible Query Answering Systems - 3rd International Conference, FQAS 1998, Proceedings
EditorsTroels Andreasen, Henning Christiansen, Henrik L. Larsen
PublisherSpringer Verlag
Number of pages16
ISBN (Print)3540650822, 9783540650829
StatePublished - 1998
Event3rd International Conference on Flexible Query Answering Systems, FQAS 1998 - Roskilde, Denmark
Duration: 13 May 199815 May 1998

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference3rd International Conference on Flexible Query Answering Systems, FQAS 1998


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