Fill Pdf with SQL

I have created a PDF form that represents a certificate. Is there any w开发者_运维技巧ay to fill out the form automatically from a SQL db or some other source and create each filled form with a different mailing address?

If there isn't a way, can someone point out how could I make it using C#

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I use iText for monkeying with PDFs in c#.

http://itextpdf.com/book/chapter.php?id=8