Rule structure

A rule is composed of two parts: the condition part, which is optional, and the action part. You use constructs to build your rules.

Understanding the structure of business rules
The structure of the rule depends on the type of rule that you want to write. There are two ways to build rules in the rule language.
Condition part
The condition part defines a set of conditions that must be satisfied for the rule's action to be triggered. This part starts with the if keyword and can be preceded by preconditions.
Action part
The action part describes the actions that the rule completes when the conditions are met. This part might start with the then keyword and can contain an else construct.

Parent topic: Rule language