Please note : This help page is not for the latest version of Enterprise Architect. The latest help can be found here.
Compose Business Rules
You use the Rule Composer to define a business rule written in plain text within a Business Rule element or Class operation. The Rule Composer enables you to model conceptual-level business rules at a logical level in tabulated format.
The Rule Composer displays as a view in the central work area. It consists of:
| • | a Rule Statements Table |
| • | a Decision Table and |
| • | a Computation Rule Table |
It assists in transforming business-level rules to technology-specific rules, or code. You can also download the contents of the Rule Composer to a spreadsheet application such as Microsoft Excel, via a CSV file.
Access Right-click on a Rule Task element | Rule Composer
Rule Composer Tables
Table |
Detail |
See also |
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Rule Statements |
The Rule Statements table lists the rules associated with the selected Rule Task; you add a rule to the table by dragging an existing Business Rule element from the Project Browser onto an empty row in the Rule Statements table. You do not create new rules within the table.
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Decision |
The Decision Table enables you to model conditional rules (for example: Cars must not be rented to customers of age less than 18). The table has three sections:
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Computation Rule |
The Computation Rule table enables you to model rules involving computations The table has the following columns:
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Notes
| • | To assist with traceability, as you complete the relationships across the Rule Composer, selecting an entry in one table automatically highlights the corresponding rows and columns of the other tables; for example, if a Rule Statement is selected, the related rule column in the Decision Table and row in the Computation Rule Table are highlighted Similarly, if a Computational Rule is selected, the corresponding column in the Decision Table and row in the Rule Statements list are highlighted |
Learn more
Learning Center topics
| • | (Alt+F1) | Business Modeling | Business Rules | Rule Composer |
| • | (Alt+F1) | Business Modeling | Business Rules | Rule Statement Table |
| • | (Alt+F1) | Business Modeling | Business Rules | Rule Decision Table |
| • | (Alt+F1) | Business Modeling | Business Rules | Computational Rule Table |
| • | (Alt+F1) | Business Modeling | Business Rules | Rule Composer Example |
