Hi All I want to store document uploaded by the user in the relational data

You could convert it to base64 and save it in a text field. See function convertdocumenttobase64() in the plugin "Base64 Utilities Plug-in". This encoding is also used when you send an attachment in an email and nothing special.

You need to make sure you store it in a CLOB. Text fields (VARCHAR or VARCHAR2) have a max limit of 4000 char and even a small file can easily be more than 4000 char long when converted to base64.
Also, take into account the additional overhead on the network to store/fetch such data. If your table is mapped to a CDT, this would have some impact - So the way you design the CDT should be modified to exclude this column (etc)

@sathya.. i m gettting the same pblm what u have explained in previous comment...after converting the Image or File to base64 ..the length of text field is increasing more than 4000..so can u tell me what is the way to do this..

If you are passing binary files through process, but not via document management, be sure to plan appropriately for system resource requirements.

thanks to All

base64 encoded data is usually 30% higher in size than the actual data. So you need to plan appropriately. You should also thing about the aspect around how you would retrieve the document to be displayed in the form. In case if some of them are images and need to be displayed inline you would need to handle appropriately.