For completeness' sake, it should be added that:
1. It's actually the DUMP TRANSACTION command that backups the transaction log. DUMP DATABASE backups the database.
2. The DUMP command is deprecated.
3. SQL Server also has some new DUMP commands: DUMP CERTIFICATE, DUMP MASTER KEY, and DUMP SERVICE MASTER KEY. All these commands export a key to a file.
Hugo Kornelis, SQL Server MVP
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