Hello Shimul.
You can make a memo field or a field which can store large amounts of text in it and you can convert the any file (not only image) to Text and store it in the field of the database.
Here is the code to convert the any file to text and back text to file.
Please download it, check the code, its quite simple to understand, and let me know if this has solved your problem. It is the
VB.NET 2005.
http://cid-e43ea542a449141c.skydrive..._TEXT2DATA.rar
Bye.