Issue a new database password when the original one-time value was not saved.
The password is shown only once after create. If it was not stored, open the database detail page and choose Reset password.
Reset is available when status is Active or Suspended.
Username does not change on reset. You can copy it from the database detail page anytime.
Deleting the database removes its login. There is nothing to reset. Create a new database if you still need one.