What is a key purpose of savepoints in SAP HANA?

Savepoints in SAP HANA are crucial for ensuring data integrity and minimizing the risk of data loss during system failures. They work by creating consistent snapshots of the database at specific intervals. When a savepoint is created, the current state of the database is stored, allowing the system to recover to that point if a failure occurs. This functionality is vital for maintaining transactional consistency and durability, ensuring that committed transactions are not lost even in the event of unexpected shutdowns or crashes.

The other choices focus on different aspects of the database's functionality. While query performance optimization is important in HANA, it is not directly related to savepoints. User session information maintenance and enforcement of security policies are managed through different mechanisms in SAP HANA, not savepoints. Thus, the primary purpose of savepoints distinctly relates to safeguarding against data loss.