Datebook /ToDo databases

Hello,

I'd like to write an application for a Palm TX that reads the Datebook (Calendar?) or ToDo database, selects the records from a particular category (for instance, all records from the category Deadlines), and prints them on the screen, together with the number of days up to every particular event (i.e. 36 days left to writing the paper, 72 days left to studying for the maths exam, etc.). Do you think this would be easy to do in Plua (I've never done any Palm OS programming).

I've seen that there are some database I/O functions, but I'm not sure how they can be used to read (and write) Datebook and Todo records on the native PIM databases. Is there a source code example with an example of this (reading/writing from/to native databases).

Thanks!