ASTRISK, Free, PBX with DB lookup and return results

A client calls into my VOIP account (ring central) on an 800#. If the caller selects an option for "auto account look-up" they are transfered to a voip extension. (this is where your code comes into play) The greeting would be: "To locate your account please enter your acct number or pin number associated with your account" Upon entry of the number, either by Voice or Tone the Astrisk code searches the DB for a match and when found the caller is either sent to an extension with a pre-recoreded message and an option to be transfered or a text to voice message is delivered to the caller, which shows the location of their acccount. Each row in the db will have an acct number, pin number, status, Location, Location phone number. There could be up to a million records in the DB and I need an interface to load new accts, apend the status of old accts. This will be loaded on a server