What is the database management system used by all Epic applications?

• A. Items
• B. Master Files
• C. Facility Structure
• D. Chronicles

Answer: (D)

Chronicles is the database management system used by all Epic applications. It serves as the underlying data store for patient records, encounters, orders, results, and other clinical data, providing fast, transactional access across Epic modules. Chronicles is a hierarchical MUMPS-based database designed specifically for the workloads of healthcare environments, which is why it remains the backbone for day-to-day Epic operations. In practice, Epic apps read from and write to Chronicles, ensuring consistent data across the system. Other terms like Master Files, Facility Structure, or Items refer to data definitions or configuration within Epic, not the database engine itself. That’s why Chronicles is the best fit as the database management system across Epic applications.