BPMN and BPEL (1)
BPMN and BPEL are both languages for describing process orchestrations.
a) BPEL includes concepts needed for process execution that are not present in BPMN. Name at least 3 of them.
b) What is the idea behind partner link types in BPEL?
More information on BPMN and BPEL can be found in the book in chapters 4.7 and 7.3, respectively.