International Journal of Computer Applications |
Foundation of Computer Science (FCS), NY, USA |
Volume 2 - Number 2 |
Year of Publication: 2010 |
Authors: Vishal Gour, Dr. S.S.Sarangdevot, Govind Singh Tanwar |
10.5120/623-887 |
Vishal Gour, Dr. S.S.Sarangdevot, Govind Singh Tanwar . Performance Tunning Mechanisms for Data Warehouse: Query cache. International Journal of Computer Applications. 2, 2 ( May 2010), 70-75. DOI=10.5120/623-887
Data warehousing encompasses architectures, algorithms, and tools for bringing together selected data from multiple databases or other information sources into a single repository, called a data warehouse suitable for direct querying or analysis. In recent years data warehousing has become a prominent buzzword in the database industry, but attention from the database research community has been limited. At the warehouse, queries can be answered and data analysis can be performed quickly and efficiently since the information is directly available, with model and semantic differences already resolved. The primary goal of data warehouse is to free the information locked up in the operational database so that decision makers and business analyst can make queries, analysis and planning regardless of the data changes in operational database. As the number of queries is large, therefore, in certain cases there is reasonable probability that same query submitted by the one or multiple users at different times. Each time when query is executed, all the data of warehouse is analyzed to generate the result of that query.