When you use the default data provider, the Web Site Administration Tool creates entries in the default ASP.NET database. ...

When you use the default data provider, the Web Site Administration Tool creates entries in the default ASP.NET database. By default, the Web Site Administration Tool creates a database in the App_Data folder of the Web site. However, using the Provider tab, you can specify that application information for user accounts and roles be kept in another database (for example, retrieving role information from the Windows user database). For detailed information, see Web Site Administration Tool Provider Tab.