A Survey of ETL Tools

In most of the organizations valuable data is wasted because of its different formats in various resources. Data warehouses (DWs) are central repositories of integrated data from different disparate sources with an objective to support in decision making process. The Extraction-Transformation-Loading (ETL) processes are the key components of DWs, so the selection of ETL tool is complex and important issue in DWs. ETL is a process of extraction of data, their transformation to desire state by cleaning it, loading it to a target database. This paper first focus the ETL process briefly then discuses analysis of some of the ETL tools based on the generalized criteria for selection of better tool for the improvement of business growth.