doesn't seem to contain the declared density altitude charts
Appears they have been consigned to the waste bins of history.
From a practical point of view, you can get adequately accurate elevations from the net - eg, see the other relevant thread at
bobtait.com.au/forum/performance/6951-declared-density-charts
Between the ASA and BOM sites you can get MSL pressures and reasonably accurate OAT forecasts.
Combine these and you have a reasonable solution for light aircraft planning in the event that you can't contact someone to obtain actual temperatures and QNH.
With communications capabilities these days, the need for something like the declared data has been pretty much sidelined. Keep in mind that the declared data was developed in ancient times for a need when communications were problematic for much of the time. In any case, the declared data was a bit rough and ready, anyway.
For the exams, I'm sure that the examiner will figure out something to suit what he did previously with the declared charts.