Hi Bert, it always helps me to make correspondences between the AOM and UML class models (they are basically the same thing). If you look at this: http://www.openehr.org/wiki/download/attachments/196630/openehr_entry_uml.jpg?version=1&modificationDate=1193397393000You'll note the [0..1] and [1] on attributes, that's the "existence", and the "occurrence" is the cardinality on relationships (that's for relationships that are no collections, i.e. single_attributes) (e.g. 0..1 in the ACTION.instruction_details relationship with INSTRUCTION_DETAILS). Also, "CMultipleAttribute.cardinality" for collection attributes is the "cardinality" on UML relationships like "INSTRUCTION.activities" or "ENTRY.other_participations". Hope that helps.
-- Kind regards, Ing. Pablo Pazos Guti?rrez LinkedIn: http://uy.linkedin.com/in/pablopazosgutierrez Blog: http://informatica-medica.blogspot.com/ Twitter: http://twitter.com/ppazos > Date: Sun, 6 Jan 2013 16:51:00 +0100 > From: bert.verhees at rosa.nl > To: openehr-technical at lists.openehr.org > Subject: csingleattribute and existence > > Excuse me the following question, maybe I am just looking over the > answer all the time > > What is the use of both together existence and occurences in case of a > CSingleAtttribute. > > And what if both have conflicting information? > > For example, existence gives REQUIRED and occurrences gives minOccurs=0 > > Thanks for a short answer > > Bert > > _______________________________________________ > openEHR-technical mailing list > openEHR-technical at lists.openehr.org > http://lists.openehr.org/mailman/listinfo/openehr-technical_lists.openehr.org -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openehr.org/pipermail/openehr-technical_lists.openehr.org/attachments/20130110/2f19ef1b/attachment.html>
