IT organizations spend a lot of time supporting data warehouse applications that are not only expensive to build and support, but they for the most part don’t really satisfy the business needs of the people who use them. The fundamental issue is that IT organizations are asked to first model the data stored in a warehouse in a way they think that end users will want to access it. Given the fact that it involves a lot of guesswork on the part of IT, the odds of success are slim to none.
One of things that people really like about Hadoop is that it eliminates the need to do all that because it allows users to invoke analytics applications directly against raw data.
To learn more and to read the entire article at its source, please refer to the following page, Getting IT Out of the Hadoop Way- Mike Vizard – itbusinessedge.com