A comparative study analysis of materialized view for selection cost

Materialized view selection is one of the most crucial techniques to design data warehouse in an optimal manner. Selecting views to materialize for the purpose of supporting the decision making efficiently is one of the most significant decisions in designing Data Warehouse. Selecting a set of derived views tomaterialize which minimizes the sum of total query response time & maintenance of the selected views is defined as view selection problem. Selecting a suitable set of views that minimizes the total cost associated with the materialized views is the key objective of data warehousing. In this paper we compare the various research works on several parameters for controlling the selection process and also we compare time , query frequency and spatial cost.