title: iOS: How to copy pre-seeded database at the first running app with SQLite.swift to writeable location?
body: <p>I had the previous question here about database location.
  <a href="https://stackoverflow.com/questions/34609746/what-different-between-store-database-in-different-locations-in-ios">What different between store database in different locations in iOS?</a></p>
  
  <p>I'm confused in copying pre-seeded database to the writable location.</p>
  
  <p>Now, every time I run and build my app, the in-use database will be replaced by pre-seeded db.</p>
  
  <p>And in the future, if I update my app version, how do I prevent the database from being replaced?</p>