Automatically assigned DDC number: 00574

Manually assigned DDC number: 00574

Number of references: 33

Title: Data Currency Quality Factors in Data Warehouse Design

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Subject: Dimitri Theodoratos,Mokrane Bouzeghoub,Le Chesnay Cedex Data Currency Quality Factors in Data Warehouse Design

Description: A Data Warehouse (DW) is a large collection of data integrated from multiple distributed autonomous databases and other information sources. A DW can be seen as a set of materialized views defined over the remote source data. Until now research work on DW design is restricted to quantitatively selecting view sets for materialization. However, quality issues in the DW design are neglected. In this paper we suggest a novel statement of the DW design problem that takes into account quality factors. We design a DW system architecture that supports performance and data consistency quality goals. In this framework we present a high level approach that allows to check whether a view selection guaranteeing a data completeness quality goal also satisfies a data currency quality goal. This approach is based on an AND/OR dag representation for multiple queries and views. It also allows determining the minimal change propagation frequencies that satisfy the data currency quali...

Contributor: The Pennsylvania State University CiteSeer Archives

Publisher: unknown

Date: 1999-11-14

Pubyear: 1999

Format: pdf

Identifier: http://citeseer.ist.psu.edu/264729.html

Source: http://www.dblab.ntua.gr/~dwq/p47.pdf

Language: en

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