WebDB: A Web Query System and Its Modeling, Language, and Implementation

Authors:
Wen-Syan Li;Junho Shim;K. Selcuk Candan;Yoshinori Hara
Affiliations:
-;-;-;-
Venue:
ADL '98 Proceedings of the Advances in Digital Libraries Conference
Year:
1998

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Abstract

The World-Wide Web can be viewed as a collection of multimedia documents in the form of Web pages connected through hyperlinks.Unlike most Web search engines, which primarily focus on information retrieval functionality, WebDB aims atsupporting more comprehensive database-like query functionality, including selection, aggregation, sorting, summary, grouping, and projection on:(1) document level information, such as title, URL, length, keywords, types, and last modified date; (2) intra-document structures, such as tables, forms, and images, and (3) inter-document linkage information, such as destination URLs and anchors. With these three types of information, more comprehensive queries can be answered for complex Web-based applications, such as Web mining and Web site management. For example, results of the query "list all Web pages which link to the NEC Web sites containing a form and a keyword multimedia within link depth of 3 and group these Web pages by country" can be used for market research on NEC's multimedia-related products.WebDB is based on object-relational concepts. This paper presents its modeling, language, and implementation detail. A novel visual query/browsing interface of WebDB, WebIFQ, is presented for demonstrating high usability of this system.