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What is the average cost of developing and maintaining a data warehouse for a large company?

Question: What is the average cost of developing and maintaining a data warehouse for a large company? Also, what is the cost of the data hardware and software (stack)?

Sid Adelman's Answer: An average is meaningless. The cost will be dependent on the application, even if you are planning an EDW, the size of the database, the number of concurrent users, the number, complexity and quality of the source data, the tools you bring in, the skills you have available to work on the data warehouse, the need for outside consultants and contractors, your SLAs, the competence of your project management, the involvement of the business folks and much more.


Sid Adelman is a principal in Sid Adelman & Associates, an organization specializing in planning and implementing data warehouses, in data warehouse and BI assessments, and in establishing effective data architectures and strategies. He is a regular speaker at DW conferences. Adelman chairs the "Ask the Experts" column on www.dmreview.com. He is a frequent contributor to journals that focus on data warehousing. He co-authored Data Warehouse Project Management and is the principal author on Impossible Data Warehouse Situations with Solutions from the Experts and Data Strategy. He can be reached at (818) 783-9634 or visit his Web site at www.sidadelman.com.

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