Uploading PDF in to BLOB and Retrieve PDF from BLOB

hi
I have recently started working in apex and run into a bump while trying to handle PDF file Attachments and BLOBs.
I am trying to upload a PDF file into BLOB database Column using APEX, and later view this file from DB.
I require assistance on how to upload PDF file into BLOB, and how i can later view this inside the browser window, using APEX
thanks

Maybe this blog post can help you.
Regards,
Sergio

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