Journal of Theoretical and Applied Information Technology
A company needs a system to conduct the process of analyzing data in order to support decision maker takes the best decision. Data warehousing system as one solution can accommodate that need. The system has been accepted as a key which enables company or organizations to improve their abilities in the data analysis, the decision support for managerial, and the automatic extraction of knowledge. With the developing of information included in the decision making process, the considered data become more complex, in both structure and semantics.