1. What is SAP HANA In-Memory Database? At the core of SAP S/4HANA is SAP HANA, an in-memory, columnar database. This architecture eliminates the need for traditional disk-based storage during transactional processing, allowing for real-time analytics and transactional processing (OLAP + OLTP) on the same system. Key Architectural Advantages: Simplified Data Model: SAP HANA red... https://sepfust.com/blogs/sap-s4hana-system-architecture-guide