Implementing a “Both, Either-or, but Not Null” Requirement in a Database

Question

I have requirement for a web app that states that a user should be able to either upload an instruction document(s) (.pdf, .doc, .txt) or provide text for the instructions. The

Answer 1

If a user submitted text, could your application save it as a .txt file? This way you would only have to worry about dealing with files.