Delete & Truncate have identical tasks (Delete data from table) but with the following differences: (Note that you may have this question @interview :))

• Truncate:
• DDL command
• can’t be rolled back, all of the memory space is released back to the server.
• much faster
• don’t check constraints
• Delete:
• DML command
• can rollback
• slower than Truncate command
• check constraints, if exists then show errors