Last week, I wrote about the massive amount of data that most large organisations have in their IT systems. Storage has become so inexpensive that most no longer worry about the cost, and increasingly companies and government departments are storing as much information as they can about every aspect of their business.
This data is often duplicated, and not just for backup purposes. A lot of it is used in data warehouses, where transactional data is massaged into a different form for business analysis. Data warehousing has been one of the strongest areas of growth in the IT industry in the past 10 years.