In organizations is extremely important have in secure form the business data (transactions, movements, incomes, outcomes, employees, clients, products, etc), in the same place or at least stored in a way that support the quick and high quality levels of extraction. A Data Warehouse is created and used for this purpose, so, a data warehouse can be defined as the main repository of the historical data in a organization.

A Data Warehouse contains the not processed data, other technology tools support the process of extract data to obtain  valuable information for managers and take decisions  based on history and actual facts, this joined to their experience can guaranty the best results.

In Customer Relationship Management, a data warehouse should be capable to storage between others, data like:

Personal Information of Clients:

• Name
• Address
• Phone numbers
• Age
• Interests
• Hobbies

Information of Products:

• Code product
• Cost production
• Sale price
• Time production
• Quality levels
• Delivery times

Using this data an organization can establish buying behaviors, in order to sell with high quality levels to the customers, can be analyzed this sells to increase the productivity of the corporation.

Maybe the most difficult part is take the bunch of data and make information out of it,  maybe in the first impression it looks without sense and to transform this into valuable information must use tools created for this purpose like data mining software that can perform complex queries and analysis to bring the company a fast way to improve their entire chain of production and have better relationships with their customers.