title: Web application manage uploaded document
body: <p>I am making file attach web application.</p>
  
  <p><strong>My Question :</strong>
  When i attach file upload on click attach button, so i have no idea where i put this attach file? </p>
  
  <p>I am finding solution for this question in google. so i find two ways, either using file system or save attach file in database. I am using file system way. </p>
  
  <p>in my application, dynamically create "upload" folder and put this attach file.</p>
  
  <p>ex. if "upload" folder is not exists then create new "upload" folder in particular path and put this attach file and if "upload" folder is already exists so put this attach file in this folder.</p>
  
  <p>however when i make build for my web application, at that time this "upload" folder becomes delete and lost my all attach file. so any other way, how can i manage uploaded document?</p>
  
  <p>please guide me.</p>