The subject-oriented notation for end-user data modelling

Existing data modeling notations and methods of database development are dedicated to technicians. At the same time, there is a tendency to involve the end-user in the development process. This requires the creation of new modeling notations and development methods for databases area. These tools should be understandable both to end-users and to developers. Because of unified understanding, it is possible to consider the action of the subject (end-user) as a basis of such modelling and designing tools. Subject's action describes the process of creating domain concepts with which end-users are working and which developers should implement in an information system. The paper proposes a subject-oriented data model and its modeling notation, which are devoted to the end user. Minimizing of graphic primitives quantity and universalization of modeling tools are results of using both the unified structure of action mechanism and its variable content.