Hi,

The System of Record (SoR) pattern is used when a case needs access to data that is stored in another

system or application. The case does not own the reference data. Data is referenced as needed by the

application for context or to populate rules. For example, a loan application or credit card dispute

accesses customer account information and history.

Data loaded from the SoR pattern usually comes from an external data source. The SoR pattern helps to

ensure that data displayed in the Pega application is current. For example, if the account holder has a

new phone number, the updated number is displayed when the data is accessed from the case.

The keyed access pattern is used to populate a list of objects and access information about a specific

object in the list. When retrieving a list of objects, the details for each object are retrieved as part of the

list. This eliminates the need for subsequent calls to retrieve object details.

The keyed access pattern is appropriate when users need to frequently switch back and forth between

objects in a large list, such as when loading a list of currencies and exchange rates.

When appropriately applied, the keyed access pattern significantly improves application performance

and maintainability.

Please let me know if this helps.

Regards,

Vikash