Compose Business Rules

In modeling your Business Rules, you first define each business rule as a conceptual-level, plain text string within a Business Rule element, and then group the rules by association with Business Task elements. Your next step is to define exactly how the rules operate within the task, setting up the values, conditions, actions and computations that define the actions of a single rule or a combination of rules. For this you use the Rule Composer, with which you transform each conceptual-level business rule statement into a logical level, technology-specific tabulated statement that you can either:

Generate code from or
Download to a spreadsheet application such as Microsoft Excel, via a CSV file

Access

Context Menu

Project Browser or open diagram | Right-click on a Rule Task element | Rule Composer

Rule Composer Tables

The Rule Composer displays as a view in the central work area, divided into three tables.

Table	Detail	See also
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 of the table. You do not create new rules within the table.	Add and Remove Rules
Decision	The Decision Table is used to model conditional rules (for example: Cars must not be rented to customers of age less than 18). The table has three sections: Rule Conditions – to model condition variables Rule Actions – to model action variables Rule Bindings – to link the rule in the rule table	Define Rule Conditions Define Rule Actions Bind Rules to Conditions and Actions
Computation Rule	Using the Computation Rule table, you model rules that require a calculation to be performed on the source information, and/or the interaction of rules. The table has these columns: Computation Rule Actions Expression Rule Bindings Rule Dependency	Define Computation Rules

Table

Detail