Distributed and various systems on learning environment are the current issues to produce big data and heterogeneity data problem. Heterogeneity on learning environment is about numerous learning applications and various learning information to support a learning process in educational institutions
IntroductionImplementation of Electronic system on learning environments is becoming popular and very important in today's scenario because of their flexibility, convenience and accessibility to support learning activities in traditional learning process [1], [2]. There is numerous and various application systems on learning environment from different function and with specific purpose, this is usually known as heterogeneity on learning environment. The heterogeneity may be the difference in: User interface, Platform, Application system, Database system, Data representation etc.The heterogeneity of data is a current issue in distributed and various information sources. Development of applications and information systems makes heterogeneity problems grow up and more complex, and from that problems need to find the best solution [3], [4]. Data on learning environment is increasingly grown up and becoming more meaningful to support learning activities [5], [6].Heterogeneity of data on learning environment is about different data representation and types of information or data in different and numerous applications to support a learning process in education institutions [7]. Different applications are develop for specific purposes based on function and feature that included on that applications [5]. A lot of applications developed on learning environment, such as Teaching and learning online application, Library application system, Question bank system, Student management and payment system, Academic information management system, Student registration system and subject course evaluation system. In this paper, researchers are using UTM (Universiti Teknologi Malaysia) as a case study to analyze the data heterogeneity problem on university environment. With numerous applications that develop with various system and database schema, produces a big data with heterogeneity problem on that environment.