How can I upload an attachment and store it into a database as a binary blob object?

Also if I (file) upload an image and I resize and create thumbnails, how do I save these images into a database.

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Kind Regards,
Rajinder Yadav | DevMentor.org | Do Good! ~ Share Freely

GNU/Linux: 2.6.35-22-generic
Kubuntu x86_64 10.10 | KDE 4.5.1
Ruby 1.9.2p0 | Rails 3.0.1

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