The e-learning study reflects a trend in the integration of information and communication technologies in universities. This trend evokes a new form of teaching and learning and a new form of relationship between students and teachers. In fact, information and communication technologies, such as e-learning, call into question the ways of thinking and the ways of acting of individuals in the representation of learning. This paradigm shift requires introspection and the renewal of skills. In the face of these changes, higher education institutes must develop and make essential the courses that allow students to adapt to the new demands of the labor market. on the other hand, information and communication technologies and computer networks, These objects from daily life, are part of the immediate environment that is both professional, educational and personal of each one. With the massive arrival of personal and accessible digital tools (computers, nomadic equipment such as mobile phones and digital tablets, etc…), multiple online spaces are emerging on the Internet (discussion forums, e-learning platforms, blogs, messaging, chats, social networks like Facebook, online information sharing sites, etc…). E-learning offers features that differentiate it from others media objects such as books or television. e-learning offers quick, even instant, access to a multitude of information sources. They make it possible to store them and facilitate the possibilities of networking between individuals and groups of individuals whatever the time and place. Access to the Internet information network is "universal". You only need to connect to a computer on the network to access almost this entire network. Access is also "simultaneous" because each Internet user exists on the network in the form of information by "his digital presence", by the data that he moves or deposits and the interactions caused. We can also say that access is independent of time and distance since it is a space permanently open to human activity. Developing an e-learning application for each technology requires a lot of human resources and technical knowledge. To solve this problem we propose a development of an e-learning application according to a model-driven architecture approach. This paper is a development of our work in paper [Srai,2020].
Today with the growth of the internet, the use of social networks, mobile telephony, connected and communicating objects. The data has become so big, hence the need to exploit that data has become primordial. In practice, a very large number of companies specializing in the health sector, the banking and financial sector, insurance, manufacturing industry, etc… are based on traditional databases which are often well organized of customer data, machine data, etc ... but in most cases, very large volumes of data from these databases, and the speed with which they must be analyzed to meet the business needs of the company are real challenges.This article aims to respond to a problem of generating NoSQL MongoDB databases by applying an approach based on model-driven engineering (Model Driven Architecture Approach). We provide Model to Model (using the QVT model transformation language), and Model to Code transformations (using the code generator, Acceleo). We also propose vertical and horizontal transformations to demonstrate the validity of our approach on NoSQL MongoDB databases. We have studied in this article the PSM transformations towards the implementation. PIM to PSM transformations are the subject of another work.
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