Found a solution:
var dbFile:File = File.documentsDirectory.resolvePath("clientName/db/general.sqlite");
You are asking quite a few questions and its hard to decipher what your real problem is. I haven't worked with files in a while, but you could so something like this. This code most likely needs some cleanup, but I think it answers some of your questions in some manner.
var appStorage:File =
var dbDir:File = appStorage.resolvePath( "/db" );
if( dbDir.exists == false )
var peopleDir:FIle = appStorage.resolvePath( "people" );
if( peopleDir.exists == false )
for each( var person:Person in personsArray )
var personFile:File = appStorage.resolvePath( "people" + File.separator + person.uniqueId);
if( personFile.exists == false )
I'm sorry if my question was unclear - that was most of the problem! Thank you for the response. It will come in handy when parsing my info.