This illustration shows objects used in materialized view replication.

The Master Database contains the following objects:

• Materialized view log (optional)
• Trigger for materialized view log (optional)
• Master table (always required)

The Master Materialized View Database contains the following objects:

• Master materialized view (always required)
• Index (always required)
• Materialized view log (optional)
• Trigger for materialized view log (optional)
• Updatable materialized view log (updatable materialized views only)
• Trigger for updatable materialized view log (updatable materialized views only)

The Materialized View Database contains the following objects:

• Materialized view (always required)
• Index (always required)
• Updatable materialized view log (updatable mateialized views only)
• Trigger for updatable materialized view log (updatable materialized views only)