The Airbus X Extended comes with the NavDataPro (LIDO) database. This one is currently a bit more extensive then it's competitor Navigraph. Should you prefer to use Navigraph that is possible as the two databases are compatible. To change the database you have to edit a small configuration file.
Look for the file NAVDATA.ini in the C:\Users\__your username__\Documents\Flight Simulator X Files\AerosoftAirbusExtended folder, the instructions on how to change it are in the text.
//All paths are relative from FSX main folder!
//useNavDataPro=1 loads NavDataPro database
//useNavDataPro=0 loads Navigraph database