Title

Data Model for Warehousing Historical Web Information

Publication Type

Journal Article

Publication Date

3-2003

Abstract

In this paper, we present a temporal web data model designed for warehousing historical data from World Wide Web (WWW). As the Web is now populated with large volume of information, it has become necessary to capture selected portions of web information in a data warehouse that supports further information processing such as data extraction, data classification, and data mining. Nevertheless, due to the unstructured and dynamic nature of Web, the traditional relational model and its temporal variants could not be used to build such a data warehouse. In this paper, we therefore propose a temporal web data model that represents web documents and their connectivities in the form of temporal web tables. To represent web data that evolve with time, a visible time interval is associated with each web document. To manipulate temporal web tables, we have defined a set of web operators with capabilities ranging from extracting WWW information into web tables, to merging information from different web tables. We further illustrate the use of our temporal web data model using some realistic motivating examples.

Discipline

Databases and Information Systems | Numerical Analysis and Scientific Computing

Research Areas

Data Management and Analytics

Publication

Information and Software Technology

Volume

45

Issue

6

First Page

315

Last Page

334

ISSN

0950-5849

Identifier

10.1016/S0950-5849(03)00019-3

Publisher

Elsevier

Additional URL

http://dx.doi.org/10.1016/S0950-5849(03)00019-3