title: query for a few hundred .db SQLite databases
body: <p>I have been asked to create a simple program to submit user defined queries to SQLite databases (.db). I have not worked with the offline databases before and have a question about optimizing performance. </p>
  
  <p>There are a few hundred .db files that I need to query. Is it quicker to attach them all to a single query using ATTACH, or join them all into a single database and work from there? My thoughts are that there will be some trade off between how much time it takes for inital set up versus the query speed. Is there perhaps a different method that would result in better performance?</p>
  
  <p>I dont think it will matter, but this will be written with C# for a windows OS desktop.</p>
  
  <p>Thanks!</p>