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Chapter 7. Decision-authoring assets in Red Hat Process Automation Manager

Red Hat Process Automation Manager supports several assets that you can use to define business decisions for your decision service. Each decision-authoring asset has different advantages, and you might prefer to use one or a combination of multiple assets depending on your goals and needs.

The following table highlights the main decision-authoring assets supported in Red Hat Process Automation Manager projects to help you decide or confirm the best method for defining decisions in your decision service.

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Table 7.1. Decision-authoring assets supported in Red Hat Process Automation Manager
AssetHighlightsAuthoring toolsDocumentation

Decision Model and Notation (DMN) models

  • Are decision models based on a notation standard defined by the Object Management Group (OMG)
  • Use graphical decision requirements diagrams (DRDs) that represent part or all of the overall decision requirements graph (DRG) to trace business decision flows
  • Use an XML schema that allows the DMN models to be shared between DMN-compliant platforms
  • Support Friendly Enough Expression Language (FEEL) to define decision logic in DMN decision tables and other DMN boxed expressions
  • Can be integrated efficiently with Business Process Model and Notation (BPMN) process models
  • Are optimal for creating comprehensive, illustrative, and stable decision flows

Business Central or other DMN-compliant editor

Designing a decision service using DMN models

Guided decision tables

  • Are tables of rules that you create in a UI-based table designer in Business Central
  • Are a wizard-led alternative to spreadsheet decision tables
  • Provide fields and options for acceptable input
  • Support template keys and values for creating rule templates
  • Support hit policies, real-time validation, and other additional features not supported in other assets
  • Are optimal for creating rules in a controlled tabular format to minimize compilation errors

Business Central

Designing a decision service using guided decision tables

Spreadsheet decision tables

  • Are XLS or XLSX spreadsheet decision tables that you can upload into Business Central
  • Support template keys and values for creating rule templates
  • Are optimal for creating rules in decision tables already managed outside of Business Central
  • Have strict syntax requirements for rules to be compiled properly when uploaded

Spreadsheet editor

Designing a decision service using spreadsheet decision tables

Guided rules

  • Are individual rules that you create in a UI-based rule designer in Business Central
  • Provide fields and options for acceptable input
  • Are optimal for creating single rules in a controlled format to minimize compilation errors

Business Central

Designing a decision service using guided rules

Guided rule templates

  • Are reusable rule structures that you create in a UI-based template designer in Business Central
  • Provide fields and options for acceptable input
  • Support template keys and values for creating rule templates (fundamental to the purpose of this asset)
  • Are optimal for creating many rules with the same rule structure but with different defined field values

Business Central

Designing a decision service using guided rule templates

DRL rules

  • Are individual rules that you define directly in .drl text files
  • Provide the most flexibility for defining rules and other technicalities of rule behavior
  • Can be created in certain standalone environments and integrated with Red Hat Process Automation Manager
  • Are optimal for creating rules that require advanced DRL options
  • Have strict syntax requirements for rules to be compiled properly

Business Central or integrated development environment (IDE)

Designing a decision service using DRL rules

Predictive Model Markup Language (PMML) models

  • Are predictive data-analytic models based on a notation standard defined by the Data Mining Group (DMG)
  • Use an XML schema that allows the PMML models to be shared between PMML-compliant platforms
  • Support Regression, Scorecard, Tree, Mining, and other model types
  • Can be included with a standalone Red Hat Process Automation Manager project or imported into a project in Business Central
  • Are optimal for incorporating predictive data into decision services in Red Hat Process Automation Manager

PMML or XML editor

Designing a decision service using PMML models

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