Abstract
Business process modelling (BPM) notations describe processes using a graphical representation of process-relevant entities and their interplay. Despite the wide literature on the comparison between different modelling languages, the BPM community still lacks an ontological characterisation of process constructs. Purpose of this paper is to start filling this gap by providing a first ontological analysis of the main business process entities. The analysis and the resulting characterisation aim at illustrating the different perspectives that BPM languages implicitly take on business processes, as well as guiding the modellers in making an appropriate choice when selecting among different notations. © 2017 CEUR-WS. All rights reserved.