Which table type in SAP HANA ensures that its definition is not visible in the catalog?

The LOCAL TEMPORARY table type in SAP HANA is specifically designed to ensure that its definition and structure are not visible in the catalog. This means that these tables are created within a session and are visible only to that session. Once the session ends, the local temporary tables are automatically dropped, which adds both to their unique behavior and their privacy within the context of SAP HANA.

This characteristic is beneficial for tasks that require temporary storage of data without the need for that data or its schema to persist beyond the current session. It avoids cluttering the global catalog with ephemeral data structures. As a result, LOCAL TEMPORARY tables are ideal for operations that require short-lived data processing and do not need to be shared or accessed by multiple sessions.

Other table types, such as GLOBAL TEMPORARY, allow for sessions to access the same definition but maintain session-specific data visibility. COLUMN and ROW tables, on the other hand, are standard persistent table types whose definitions are stored in the catalog and can be seen by all users with the appropriate permissions. Hence, the option indicating LOCAL TEMPORARY is the correct solution here, as it aligns perfectly with the requirement of non-visibility in the catalog.