What is the purpose of a data page in Pega applications?

The purpose of a data page in Pega applications is to retrieve and display data quickly. Data pages serve as a way to encapsulate and manage data access in a consistent manner. When a data page is called, it can pull data from various sources, such as databases or external systems, and present that data to the user interface or other parts of the application as needed.

Data pages are designed to optimize performance and manage data efficiently. They can cache data to minimize repeated fetches, which can enhance the speed of data retrieval throughout the application. This capability is particularly important in complex applications where data can be fetched from multiple locations and shared across different processes or screens.

The other options do not accurately describe the primary function of data pages in Pega. Displaying user interfaces is managed through user interface rules and layouts, rather than data pages. Storing case data persistently is typically handled through the database and is the function of the case management system, while creating new case types involves application design and not the specific role of data pages.