Models and model transformations are defined as primary artifacts in OMG’s Model Driven Architecture (MDA). The main idea of MDA is to separate the formal representation of the system, preserving the highest possible level of abstraction in the form of system model, as well as to transform this model to the level required for system implementation. Two-hemisphere model represents the problem domain from the business perspective. It uses two interrelated system models—a business process model and a concept model, expressed in GRAPES notation. The main emphasis of this research is concerned with applying the OMG’s notation to represent the business hemisphere in Business Process Modeling Notation (BPMN). This paper comprises the general issues of the research, difference between the notations, as well as the results on generated set of elements of UML class diagram.