database - What are advantages of SQL Server 2008 transparent encryption TDE over encrypting db backup? -

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what advantages of sql server2008+ tde ( transparent data encryption) on encrypting database backup file (with password)?

update:
sorry - removed oracle question (sql server tde whole database , encrypted data stored in database).
encrypting not difficult organize using c# without 3d-party tools, though there plenty of 3d party tools.

i've never used either feature, cursory review of 2008 books online documentation makes clear password option backup database command (i'm guessing that's meant?) doesn't encrypt anything:

the protection provided password weak ... [it] not prevent reading of backup data other means or replacement of password

and apparently shouldn't use @ anyway:

this feature removed in next version of microsoft sql server

so whatever security requirements, password unlikely useful. whether or not tde useful depends on risk you're trying mitigate, e.g. encrypts data on disk not during transmission on network. if implement form of encryption, make sure have extremely planned , tested backup/restore procedures range of scenarios.


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