The term “data warehouse” was coined some 20 years ago
to represent the process and technologies used to maintain a copy
of operational data for decision support purposes. That is,
as companies processed more and more transactions (eg, retail
point-of-sales, banking withdrawals / deposits, airline
reservations, etc) it made sense to store and maintain a copy of
the data to allow people to analyze and optimize the business.
Today, data warehousing is a $20B+ industry and growing.
The market can be segmented by size into “high-end data
warehouses” with 10’s to 100’s of terabytes of information, and
“mass-market data warehouses” with less than 10 terabytes.
The high end of the data warehouse market accounts for over half
of the spend, but only 10% of the potential deployments.
Predictably, most of the competition …
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