the best data integration method by using saw technique in ministry of science, research and technology (msrt)

many computer systems are usually used by the organizations. the data within different systems should be integrated in order to analyze and provide a report. the method of saving data and files often focused in the past, the data structure and flow received little attention, therefore, large volume of data and data transfer management carry into account as a big challenge. since information systems are growing in the organizations, the number and entanglement of interfaces will increase. if the data integration strategy is disregarded, the organization will meet numerous problems. there are 4 different data integration methods which have their special usage. this article concentrates on the process of data integration and aims to understand the meaning and methods of data integration, to identify variables and effective factors on data integration, to rank the variables of data integration and to provide the best method of data integration by saw technique for the ministry of science, research and technology.