Building data warehouses is very difficult process . Many early adopters found it to be costly, time taking, and resource consuming. Over the years, it has earned a reputation that this was very risky process. This is especially true for those who have tried to build data warehouses themselves without the help of experts.
Fortunately, it is usually no longer necessary to custom build your own data warehouse. Pre built solutions are now available that drastically reduce the effort and risk. As a result, the time has come for organizations to develop a thorough understanding of data warehousing.
Managing Business and handling different market seniero without making use of information technology is difficult now a days
So to make life easy for managers of the organization or to make good market strategy we require large amount of data so that micro level research analysis will be done and by this we can increase the decision making power of the managers
Here Data warehousing is a tool very useful which can store huge amount of data in three dimensional form