You create users using the Web Site Administration Tool or the CreateUserWizard
control. No external database is being used. In which database ,all the user details
will be stored?

Answer:

In the aspnetdb database, all the details will be stored.It is stored under the
App_Data folder.It stores the user details in aspnet_membership and the aspnet_users
tables.
aspnetdb.mdf file will be there in the App_Data folder. You can click this file and see
the data in the above mentioned tables.