Cryptography and database

Hi!
I need to keep data as secure as possible on a database. I can manage apllicative security using password but I need also security in case of theft.
Files containing data should be stored with a Cryptography alghoritm.

Two possibilities:
1-encrypted filesystem (efs)
2-use a database that use cryptography internally.

In the first case efs work transparently ro application but decrypt key is stored on the system and a skill boy can in theory decrypt files In the second case alghoritm may be coded into database server software and a bit difficult to discover

What's your opinion, suggest?

Thanks in advance.

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Luca Vertua
tech_at_8volante.com
8volante srl soluzioni_internet
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