BACHELOR OF BUSINESS ADMINISTRATION

Detailed explanation-1: -Declare Expression is one among the four main types of declarative rules in Pega which target a single property either to obtain its value or to validate the value. The declarative rules include: Declare Expression. Declare Onchange.

Detailed explanation-2: -Backward chaining means C will be calculated if that is being used in some activity or sections or referenced somewhere i.e. called backward chaining and forward chaining means C will be calculated no matter whether C is used or not.

Detailed explanation-3: -Forward chaining is executed when the value of any of the source properties change. Backward Chaining mode executes when the target property is referenced. Backward chaining is supported only for declare expressions. Based on your requirement, we need to choose the Forward or backward chaining.

Detailed explanation-4: -For example, when an unexpected business exception occurs, such as a negative subtotal in an online shopping cart, you can use a Declare OnChange rule to check changes to the subtotal property. A when rule can be used to check if the subtotal is negative and determine if work needs to be suspended on the object.