Erp Data Warehouse

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IST/ERP 444 Data Warehouse

Homework 1: Definition of Data Warehousing

Name: Rallapalli Venkata Pavani

Search any resource (Books, Web Sites, Papers, etc.) to find three definitions for Data Warehousing. Include the detailed information (Title, authors and the source of the definitions. For example:

“Data warehousing is a collection of decision support technologies, aimed at enabling the knowledge worker (executive, manager, analyst) to make better and faster decisions.” An overview of data warehousing and OLAP technology by S Chaudhuri, U Dayal, from ACM Sigmod record, Volume 26 , Issue 1 (March 1997) Pages: 65 – 74.

1. “A data warehouse is an integrated and time varying collection of data derived from operational data and primarily used in strategic decision making by means of online analytical processing (OLAP) techniques.” from “Conceptual data warehouse design” by B. Husemann, J. Lichtenberger, and G. Vossen. Page 1.

2. “A galactic data warehouse is a subject-oriented, integrated, time-variant, non-volatile collection of data in support of management's decision making process about any and all enterprise business processes and departments, and about the enterprise taken as a whole. A business process-oriented data warehouse is a subject-oriented, integrated, time-variant, non-volatile collection of data in support of management's decision making process about any and all business processes and their interactions with one another and the external world. A department-oriented data warehouse is a subject-oriented, integrated, time-variant, non-volatile collection of data in support of management's decision making process about any and all departments, and their interactions with one another and with the external world.” From DKMS Brief No. Six: Data Warehouses, Data Marts, and Data Warehousing: New Definitions and New Conceptions by Joseph M.Firestone.

3. “Physically, a data

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