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12. What is BPM?

Business process management (BPM) is the organizational activity of developing and managing processes that are responsive to change and improve business performance outcomes. When an organization uses BPM, they coordinate the presentation of the user interface, the logic, and the data access for an application with the process for how work gets done.  

13. What is RPA?

Pega Robotic Automation™ builds bridges between unrelated software systems in order to automate tedious manual work and repetitive tasks, improving productivity and efficiency.  

14. What is pyDefault?

It is used to initialize property values when creating a case We can create data transforms called pyDefault in any class or ruleset If we do not create a pyDefault for a case, the standard pyDefault in the inheritance path is invoked.  

15. What is rule, ruleset and types of rulesets?

Rule: Rules are the building blocks of a Pega application They are the instructions to create, process, and resolve a case, when configuring a Pega application. They describe case behaviour and are used to generate application code. Use of individual rules makes an application modular, and therefore promotes reuse. Modularity provides 3 benefits: Versioning, Delegation, Reuse.
Ruleset: It can be shared between applications to allow several applications to use the same rules. Identifies, stores, and manages the set of rules that define an application or a major portion of an application has name and version number. The version number is divided into 3 segments: Major - substantial release of an application, encompasses extensive changes to application functionality Minor - represents an interim release or enhancements to a major release Patch - consists of fixes to address bugs in an application.
Types of ruleset: Rule set types Are, Shared rulesets, Component Rulesets, Override rulesets, Standard rulesets  

16.What is case management ?

Case Management is a business practice that helps you deliver outcome driven results. It relies on case types to model customer processes, share information, and ensure that there is visibility into the work that is completed by your application. Case Management automates service-level agreements, escalation, and audit trails so that you can provide a quality, end-to-end customer experience.  Use the Case Type Explorer and Case Designer to build a Case Management strategy in your application.  

17.What is sub report ?

A subreport is a report that is called by another report to provide data. When you designate a report as a subreport, the original report is not altered, and you can still access it. However, a subreport cannot have its own subreports. You can designate subreports within report definition reports to simplify assembling data from several classes, or to satisfy complex conditions.  

18.What is mixin?

A mixin is a reusable style pattern defined in the skin.  Mixins can define a combination of reusable text, border, or background styles.  

19.Define class hierarchy.

Classes that comprise an application determines how system architects can reuse rules within the application consists of several groups of classes: Classes that collect common rules and data elements ( reuse at div/org level),   Classes from other applications of Base classes provided by the Pega platform 

20. What is circumstancing ?

Circumstancing is the practice of creating additional variants of a rule based on specific circumstances, such as property values. When the circumstancing criteria are met, Pega automatically executes whichever version of the rule either the base rule or the qualified circumstanced version of the base rule.  

21.What is ECS?

The Enterprise Class Structure, or ECS, is an out-of-box class structure that provides a foundation for reuse. There are four layers (Enterprise or Organizational, Divisional, Implementation) and each layer is designed to hold rules that are specialized for that layer.  

22. What is forward and backward chaining. Explain the differences and methods of it ?

Forward chaining: Forward chaining is executed when the value of any of the source properties change.
Backward chaining:  Backward Chaining mode executes when the target property is referenced. Backward chaining is supported only for declare expressions.  

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