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Preface
As a business analyst or business rules developer, you can use Decision Model and Notation (DMN) to model a decision service graphically in a decision requirements diagram (DRD). This diagram consists of one or more decision requirements graphs (DRGs) that trace business decisions from start to finish, with each decision node using logic defined in DMN boxed expressions such as decision tables.
Red Hat Decision Manager provides design and runtime support for DMN 1.2 models at conformance level 3, and runtime-only support for DMN 1.1 models at conformance level 3. You can design your DMN models directly in Decision Central or import existing DMN models into your Red Hat Decision Manager projects for deployment and execution. Any DMN 1.1 models that you import into Decision Central, open in the DMN designer, and save are converted to DMN 1.2 models.
For more information about DMN, see the Object Management Group (OMG) Decision Model and Notation specification.
The DMN designer in Red Hat Decision Manager 7.2 is a Technology Preview feature and is disabled by default in Decision Central. Technology Preview features are not supported with Red Hat production service level agreements (SLAs), might not be functionally complete, and are not recommended for production. These features provide early access to upcoming product features, enabling customers to test functionality and provide feedback during the development process.
To enable the DMN designer preview in Decision Central, in the upper-right corner of the window, click Settings → Roles, select a role from the left panel, click Editors → DMN Designer → Read, and click Save to save the changes.
For more information about Red Hat Technology Preview support, see Technology Preview Features Support Scope.
