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A Comprehensive Framework for Querying and Integrating WWW Data and Services
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D. Konopnicki and
O. Shmueli
View Paper (PDF)
Return to Web Information Systems
Quo is a framework for the development of applica-tions that use WWW data. Quo models the WWW ac-cessible data using a dynamic semistructured data model called Quom (Quasi-Object Model). Within a semistruc-tured model, Quomintroduces (1) Object-Oriented features, (2) a structure declaration which is a "lightweight"schema definition. On the other hand, Quom relaxes the require-ment, of Object-Oriented data models, of a strict schema definition. This enables dealing with the irregularities of WWW extracted data and with self-describing data formats "`a la"XML. Data extraction rules are defined using Quodl, the Quasi-Object Definition Language. Quodl data extraction rules use XSL to analyze and extract HTML/XML data and regular expressions are used for the analysis of, and extraction from, raw data.
Copyright(C) 2000 ACM
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