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- MEANING OF BUSINESS PROCESS MODELLING NOTATIONS SOFTWARE
- MEANING OF BUSINESS PROCESS MODELLING NOTATIONS SERIES
the purpose of these extension is to enable graphical representation of additional information on a process diagram.Įxtended EPC (eEPC) DiagramAdditional views are represented by enhancing event-driven process chains with notational elements providing richer information on process diagram.įigure 6: Example of extended EPC diagram The next two sections take a quick look at eEPC and BPMN with extension artefacts. the flows are the orchestration of controls between roles.Įxtending the NotationsBoth EPC and BPMN process diagram have been enhanced or allow enhancement to the elements. While the hand-offs between roles are delineated in RAD, they are shown as flows between roles in EPC and BPMN, i.e. This is a good time to concur on the key difference between role-based approach of RAD and process-based approach of EPC diagram and BPMN process diagram. Again like EPC diagram, in BPMN process diagram hand-off is implicitly shown with the sequence flow arrow. Intermediate events may be used as in Figure 5. Similar to the EPC diagram, a BPMN process flow always start and end with events. The key elements of BPMN process diagram are:įigure 4: Example of BPMN process diagramįigure 5: Example of BPMN process diagram with pool, lanes and intermediate events BPMN process diagram is one of the three types of diagrams defined under the standard. Events are place to denote an outcome of previous function and/or a trigger for the next function.īPMN Process DiagramBPMN stands for Business Process Model & Notation which is process modelling notation standard released by Object Management Group. Hand-off is shown simply with the control flow arrow. When using lanes, the EPC diagram may look similar to RAD but noted the different approach in depicting hand-off between roles. While in RAD the states represent states of roles, here the events refer to stages of the process.
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In EPC diagram, a process flow always start and end with events. Inputs and outputs can be information or physical products.įigure 2: Example of EPC diagram without lanesįigure 3: Example of EPC diagram with lanes The process chain (EPC) is the control view of the framework that is used to integrate the other views - organisation, data and functions views.Įvents trigger functions which represent units of work that take input and transform it to output. In the example above, the action "give plan to designer" is drawn in both the project manager role and the designer role.Įvent-driven Process Chain (EPC) DiagramEvent-driven Process Chain (EPC) is a part of the ARIS framework - a holistic modelling approach ARIS stands for Architecture of Integrated Information Systems. Another key difference is with an interaction or hand over between roles which is explicitly shown in RAD inside all the roles associated with the interaction. Actions change the state of a role and states start actions. One of the key differences between a RAD and the other two process notations, EPC and BPMN, is that in RAD each role starts and ends with a state with actions happening in between the states of the roles. focusing on the jobs of specific roles and their interactions with others. As described in its name, RAD is a basic role-oriented process model, i.e.
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MEANING OF BUSINESS PROCESS MODELLING NOTATIONS SOFTWARE
Role Activity Diagram (RAD)Role Activity Diagram (RAD) is a notation originally developed in the UK, for process modelling in software development projects. In this article, we look at three types of process flow diagrams - Role Activity Diagram (RAD), Business Process Model & Notation (BPMN) process diagram and Event-driven Process Chain (EPC) diagram.
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Having said that a notation may be used intuitively across both areas. Categorically they can be grouped into two major types based on the purpose of the diagram - (i) process context notations where the main purpose of the diagram is to define the context or landscape of business processes in an organisation and (ii) process flow notations where the main purpose is to show flows of activities in business processes or across processes. IntroductionThere are many graphical modelling notations or types of diagram that can be used to depict business process.
MEANING OF BUSINESS PROCESS MODELLING NOTATIONS SERIES
This is the first article of a series attempting to show with simple examples some of the commonly used business process modelling notations. The notations are always a topic of contention among business process modellers and practitioners. In several discussions I have had about process modelling methods, the methods being discussed are the types of notation or graphical notation used to represent business processes.