What notations besides BPMN have you used? Have you used UML diagrams?

In addition to BPMN, the following notations are often used in practice:

• UML diagrams — a universal modeling language, including:

  • Class diagrams (data structure and objects)
  • Sequence diagrams (interactions over time)
  • State diagrams (behavior of objects)
  • Use case diagrams

• ER diagrams — for modeling databases and relationships between entities.

• DFD (Data Flow Diagrams) — for depicting data flows and processes.

The use of UML diagrams depends on the task and team. For example, class diagrams are useful in architecture design, while sequence diagrams are for describing component interactions. BPMN is more often used for business processes, where visualization of workflows and events is important.

In my practice, UML diagrams were used for technical documentation and communication with developers, while BPMN was used for aligning business processes with clients and analysts.