A Formal OLAP Algebra for NoSQL based Data Warehouses

NoSQL solutions are started to be increasingly used in modern days’ Data Warehouses (DW). However, business analysts face challenges when performing On Line Analytical Processing (OLAP) queries on these systems. The lack of uniform representation various OLAP operations over different types based DWs is one them. In addition, deficiency precise semantics create obstacles effective query interpretation distinct DWs. This paper aiming deal with aforementioned challenges. Formal and rigorous specification represented this for kinds operators operations. These specifications capable analyse queries. Further, the proposed formal implemented a document-oriented database using suitable case study. approach aids efficient visualization techniques data cubes