Event-driven process chain (EPC)
EPC depicts work processes graphically using a semi-formal modelling language with syntax rules. EPC has the logic operators AND, OR and XOR to allow decisions to be taken within processes based on conditions and rules.
The basic model of the event-driven process chain includes events and functions in addition to these operators. Objects are arranged in ordered graphs with logical connectors or arrows in a one-to-one relationship (with the exception of logic operations). In a logical chain of this sort, objects can represent either events or functions.