Business process modeling

Business processes are analyzed on the basis of a business process model. These models map a relevant section of the real world and attempt to represent the business process in a simplified way. In a business process model there are several activities that represent business functions and states within a company. These activities are organized in a meaningful sequence by a control flow, so that dependencies of the processes can be derived from the model. There are numerous modeling techniques for business processes. Depending on the purpose of the analysis, appropriate models should be used..

Modeling methologies

• Flowcharts have their origin in the field of programming. In this field, this modeling technique enabled the visualization of the logic and execution sequence of a program.
• Data flow diagrams focus on the data in an information system and show the sequence of processing steps through which the data passes. Each step documents an action that is performed to transform the data.
• Control flow diagrams are typically used to represent event-driven applications.
• Functional flow block diagrams are used to represent the execution sequence of system functions. This modeling technique enables the representation of sequential and parallel operations in a process.
• Gantt charts are used as a modeling tool in project management. These diagrams represent each task as a horizontal bar whose length was determined by the expected duration of the task. In addition to logic, these diagrams can also depict the sequence of tasks.
• PERT diagrams are also used in project management and have the same purpose as Gantt diagrams. The difference is that PERT diagrams are better at representing sequences.
• IDEF is a group of modeling languages. From IDEF0 to IDEF5, there are five different modeling techniques specialized for different application areas. IDEF0, for example, models activities performed by an organization. The focus of the model is on inputs and outputs.
• The Unified Modeling Language (UML) evolved from several incompatible representations for describing object-oriented software systems. The Object Modeling Group (OMG) ensured that a unified model was created from the many different models. The language consists of a number of different, loosely coupled model types, each serving a different purpose. These include class diagrams, use case diagrams, sequence diagrams, and package diagrams.