Oracle Zero Downtime Migration organizes its Oracle database migration methods into two fundamental workflow families: Physical Migration and Logical Migration . Each family can then have online and offline variants depending on compatibility requirements and acceptable downtime.

Physical migrations operate on the physical database representation and rely on technologies such as RMAN and Oracle Data Guard. Physical Online migration can instantiate a target using Restore From Service and maintain synchronization using Data Guard, while Physical Offline uses RMAN backup and restore.

Logical migrations operate through logical database objects and data. Oracle Data Pump provides the initial export/import mechanism, while Logical Online migration integrates Oracle GoldenGate to capture and replicate ongoing transactions before cutover. Logical workflows are also suitable for many cross-version or cross-platform scenarios that physical workflows cannot support.

"Container-based migration" and "snapshot-based migration" are not ZDM's top-level migration workflow categories.

Oracle's current ZDM documentation explicitly states that ZDM supports both Physical and Logical Migration workflows.

Therefore, B and D are correct.

Study Guide reference: Migrate Oracle Databases to Oracle AI Database@Azure — ZDM workflow categories.

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