Camunda Team Blog

DMN

More FEEL for Camunda

Written by Philipp Ossler on , under Community category.

I’m happy to announce the first release of the new community extension FEEL-Scala. FEEL is a part of the DMN specification of the OMG and stands for “Friendly Enough Expression Language”. It provides a simple data model and a syntax designed for a wide audience. The new community extension implements a large feature set of FEEL and replaces the default FEEL engine of the Camunda DMN engine.

How to chain decisions with DRDs

Written by Niall Deehan on , under DMN category.
Happy Birthday DMN DMN has proven to be a very popular and well adopted standard for describing and executing business rules. It’s uptake among Camunda users alone has been very impressive, especially considering it’s a standard that’s only about a year old. It’s popularity has given us the perfect excuse to implement even more elements of the standard. In fact since we first started to support it, we’ve been asked about when we intend to implement DRDs (Decision Requirements Diagram).

Citizen Identity Enrolment using BPMN and DMN

Written by Robert Parker on , under Community category.
Citizen Identity Enrolment using BPMN and DMN At a recent ‘Hack Day’, I decided I wanted to explore a combined BPMN and DMN solution using the latest Camunda implementation. For a use case I settled on identity enrolment. Identity enrolment requires a combination of process, interactive user tasks and is rich in decision logic. Hence a perfect use case for the combined offering. At a high level, identity enrolment can be abstracted to the following pattern.

Testing DMN Decision Tables

Written by Bernd Rücker on , under ModelingCommunity category.

We did a very successful roadshow the last weeks showing DMN amongst other topics. One thing which was always discussed is how to validate/test DMN decision tables.

I want to start with a quote of myself (to give you a good impression on my ego ;-)):

When authoring rules in a more agile, business-friendly way, do not forget about testing them in a more agile, business-friendly way.

This post shows various approaches discussed on the roadshow.

Converting Excel Worksheets to DMN

Written by Thorben Lindhauer on , under Community category.

Decision Model and Notation (DMN) is the new kid on the block when it comes to defining decisions and business rules. Like BPMN and CMMN, it tries to bridge the gap between human readable definition of business-relevant aspects and technical realization. DMN therefore has a graphical representation as well as an XML-based serialization format and Camunda provides you with a beautiful editor to manage both. So why not go full DMN any minute now? Probably because you work with business rule definitions for much longer than DMN is around and you manage them in Excel. Recreating these with the DMN editor is a tedious task. That is where Camunda’s newest community extension comes into play: The Excel worksheet to DMN converter.

CMMN 1.1 and DMN 1.1 approved by OMG

Written by Falko Menge on , under Modeling category.
Yesterday, CMMN 1.1 and DMN 1.1 have been approved by the OMG Architecture Board. This means that the new versions of the industry standards “Case Management Model and Notation (CMMN)” and “Decision Model and Notation (DMN)” are now final. They are immediately available to OMG members and it’s just a matter of some final document conversion until they are released to the public. Camunda already released the implementation Camunda was ahead of it’s time and already released it’s implementations of CMMN 1.1 and DMN 1.1 last week.