Title

Anatomy of a Coupling Query in a Web Warehouse

Publication Type

Journal Article

Publication Date

2002

Abstract

To populate a data warehouse specifically designed for Web data, i.e. web warehouse, it is imperative to harness relevant documents from the Web. In this paper, we describe a query mechanism called coupling query to glean relevant Web data in the context of our web warehousing system called Warehouse Of Web Data (WHOWEDA). Coupling query may be used for querying both HTML and XML documents. Some of the important features of our query mechanism are ability to query metadata, content, internal and external (hyperlink) structure of Web documents based on partial knowledge, ability to express constraints on tag attributes and tagless segment of data, ability to express conjunctive as well as disjunctive query conditions compactly, ability to control execution of a web query and preservation of the topological structure of hyperlinked documents in the query results. We also discuss how to formulate query graphically and in textual form using coupling graph and coupling text, respectively.

Discipline

Databases and Information Systems

Research Areas

Data Management and Analytics

Publication

Information and Software Technology

Volume

44

Issue

9

First Page

513

Last Page

539

ISSN

0950-5849

Identifier

10.1016/S0950-5849(02)00051-4

Publisher

Elsevier

Additional URL

http://dx.doi.org/10.1016/S0950-5849(02)00051-4