THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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- ARCHIVE/UNARCHIVE/TRUNCATE/MERGE/CONCATENATE only work for managed tables
- DROP deletes data for managed tables while it only deletes metadata for external ones
- ACID/Transactional only works for managed tables
- Query Results Caching only works for managed tables
- Only the RELY constraint is allowed on external tables
- Some Materialized View features only work on managed tables
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