Can you describe an example?
Generally: Files are files and data ist the content of a file or a table.
What I mean is:
Is it's a file then store it as a file. Only the index is stored in a table (with the path). If you need contents of the file it, then get the contents and store it in a table:
Get file from a folder on a server:
Dim GetImage As HttpJob
GetImage.Initialize("GetImage", Me)
GetImage.Tag=filename
GetImage.Download(ServerPath & FTPFolder & "/" & filename)
Save it to the device:
Dim out As OutputStream
out = File.OpenOutput(mypath & "/" & myFolder& "/", Job.Tag, False)
File.Copy2(Job.GetInputStream,out)
out.close
To read a file (to get the content) take a look to other examples in the forum.