Thursday, January 08, 2009

BPMN and BPEL

As I alluded in my earlier post , the BPMN 1.1 version lacked a serialization format and clear execution semantics. However, the BPMN 2.0 attempts to close this gap. Further the execution semantics of BPMN 2.0 leverage and build upon the industry adoption of BPM tools, experience with BPEL execution and research efforts of the wider community. There has been some debate around the relationship of BPMN and BPEL and it is captured on Ismael's blog. BPMN vendors bring valuable experience from BPEL standard, execution engines built around it and market experience to the table and it reflects in the specification also. The BPMN 2.0 specification team further clarifies the relationship between BPMN and BPEL in the InfoQ interview.

If I rephrase Manoj's response, currently i.e. until OMG ratifies the BPMN 2.0 spec, BPMN is a modeling standard and BPEL is an execution standard. Both are complementary in that regard and many BPMN models may be executed as BPEL processes. As BPMN 2.0 defines sufficient execution semantics, the implementation engines may start executing BPMN 2.0 natively, creating an overlap with BPEL 2.0. There will be significant consistency between the two from this perspective. Further, there will be different use cases for which the two approaches - BPMN models executed as BPEL and native BPMN execution - will be better suited.
PS: Standard disclaimer: The views expressed on this blog are my own and do not necessarily reflect the views of Oracle.

37 comments:

Dean Gori said...

Vishal,
I'm desperatly trying to find out what source code is used in the new BPMN 2.0. Does is produce XPDL code, UML.... what?

Vishal Saxena said...

Hi Dean
In BPMN 2.0 there will be a specific XSD. So it produces a .bpmn file.
Vishal

kswenson said...

Vishal,

It is to hypothesize about a new XML format for storing BPMN, and having an actual certification test for it working. Since you wrote this post, a BPMN Model Portability conformance test has been completed, and three products were found to pass, with a few more on the way. In may way, I think that a conformance test is more important than the standard it is testing. I am really curious what your opinion is.

-Keith

kswenson said...

Vishal,

(My previous post got truncated somehow....this is what I meant:)

It is one thing to hypothesize about a new XML format for storing BPMN, and another to have an actual certification test for it working. Since you wrote this post, a BPMN Model Portability conformance test has been completed, and three products were found to pass, with a few more on the way. In may way, I think that a conformance test is more important than the standard it is testing. I am really curious what your opinion is.

http://www.capterra.com/business-process-management-software/software_news/prweb2260394

-Keith

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