Dimensional modeling is a set of techniques that is used in designing the overall structure of data warehousing. It doesn't involve relational database but at the logical level uses the physical form of the database. It is used to support user queries and to increase the performance and understanding of a particular database concept. It uses facts and dimensions to support the measures and the context of the database. The facts define the values that can be aggregated and dimensions represent the group of hierarchies and the descriptors that define the facts in return. This type of models is built by business process model and consists inside the process area. This process area consists of the same design and operation details as others.