Online Analytical Processing (OLAP) and Data Warehouse
The OLAP is a part of the storage and the methods are used with the user. This part of data allows seeing by multidimensional data, visualization, rotations, and explorations. OLAP with the SQL Server. It's a part of systems used for as: ROLAP (OLAP Relational); DOLPA (Desktop); HOLAP (OLAP Hybrid); MOLAP (OLAP Multidimensional). That interface could be compared to each other to consult charges and develop the base to be more efficient for a specific product. So it's important to understand the type of combinations of OLAP and the type of model used to the model. ROLAP (big volume of data, MOLAP more specific to direct limit analysis and details on the Data Marts)