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Pega Very Important Interview Questions & Answers
What is forward and backward chaining in Pega?
What is forward and backward chaining in Pega?
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<blockquote data-quote="AllJobsInfo" data-source="post: 50" data-attributes="member: 1"><p><span style="color: rgb(226, 80, 65)">Forward chaining </span>is executed when the value of any of the source properties change.</p><p></p><p><span style="color: rgb(226, 80, 65)">Backward chaining </span>mode executes when the target property is referenced somewhere.</p><p></p><p>Backward chaining is supported only for declare expressions.</p><p></p><p>In case of above expression: A=B+C</p><p></p><p>If B and C are changing frequently better to choose backward chaining. So that expression triggers only when A is used.</p><p></p><p>OR</p><p></p><p>If A is used many places for display and calculations better to choose forward chaining. So that when input changes target is calculated and ready for usage.</p><p></p><p><strong>Declarative Network</strong>: is nothing but a network in which output of one declare expression is input to the other for further calculations. It is designed for Forward Chaining and not useful for BC.</p></blockquote><p></p>
[QUOTE="AllJobsInfo, post: 50, member: 1"] [COLOR=rgb(226, 80, 65)]Forward chaining [/COLOR]is executed when the value of any of the source properties change. [COLOR=rgb(226, 80, 65)]Backward chaining [/COLOR]mode executes when the target property is referenced somewhere. Backward chaining is supported only for declare expressions. In case of above expression: A=B+C If B and C are changing frequently better to choose backward chaining. So that expression triggers only when A is used. OR If A is used many places for display and calculations better to choose forward chaining. So that when input changes target is calculated and ready for usage. [B]Declarative Network[/B]: is nothing but a network in which output of one declare expression is input to the other for further calculations. It is designed for Forward Chaining and not useful for BC. [/QUOTE]
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Pega Very Important Interview Questions & Answers
What is forward and backward chaining in Pega?
What is forward and backward chaining in Pega?
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