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Data Warehouse Team

Oracle Tips by Burleson Consulting

The Data Warehouse Development Life Cycle

The Data Warehouse Team 

While the size of a data warehouse team may vary from a handful of participants to more than 100 full-time developers, all data warehouse teams should consist of a project sponsor, project manager, warehouse architect, systems administrator, legacy database experts, data warehouse Remote DBA, operations manager, metadata specialist, end-user interface specialist, network administrator, Oracle developers, and a statistician. The roles for each participant are as follows:

* Project Sponsor--The project sponsor for a data warehouse should be a senior vice president who truly believes in the necessity of the data warehouse and is zealous in her conviction about developing a first-rate data warehouse.

The relationship between the project sponsor and the project manager is defined such that the sponsor exists solely for the purpose of facilitating communications among the end-user management and the data warehouse management. Because the project sponsor is a figurehead--in the sense that she is not directly involved in the data warehouse project as a full-time occupation--it is desirable to find a project sponsor from the highest ranks of management because end-user managers are often highly-placed within most organizations. Ideally, the project sponsor is at the vice president level or Chief Information Officer (CIO), the top person in an information systems organization. This ensures that the project sponsor is able to facilitate the needs of the data warehouse project from the highest levels of the organization. The right placement of the project sponsor can also be invaluable when a project is delayed, and the sponsor can remind end-user management about the value of the data warehouse and obtain any additional staffing or capital required to overcome the hurdle. participants. Consequently, a data warehouse project manager must be well-versed in quantitative project management techniques, such as PERT and CPM. Project managers must always be up-to-date on warehouse development activities, and they should be able to efficiently allocate resources to ensure a timely and cost-effective project completion.

* Warehouse Architect--A warehouse architect is usually a senior Oracle database administrator who has an extensive background in data modeling and data design. For organizations that are new to data warehousing, an outside consultant is often used to train an in-house architect in the nuances of data warehouse design. The ideal of massive de-normalization and data redundancy may sometimes seem abhorrent to data architects for OLTP systems, and it can be a wise investment to augment the architect with an outsider who has a proven record in effective Oracle data warehouse design.

* Systems Administrator--A systems administrator is in charge of low-level operating system software. The systems administrator should understand the technical ramifications of the data warehouse hardware, including parallel processing, RAID, and system access security. Many of these technologies will be foreign to systems administrators, and it is usually a good idea to hire data warehouse consultants to review the hardware operations and computer configurations.

This is an excerpt from "High Performance Data Warehousing". To learn more about Oracle, try "Oracle Tuning: The Definitive Reference", by Donald K. Burleson.  You can buy it direct from the publisher at 30% off here:


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