How to output data from 2 tables ?

Hello everyone, I have completed the example (https://support.ptc.com/help/windchill/wc111_hc/whc_en/index.html#page/Windchill_Help_Center%2FWCCG_...) from the documentation, the Pet table is output. 

How can I output data not only from this table, but also from the second one that will be associated with it?
And how to link them correctly?
Enter the path in the [classnamekeyA2ownership] column, and enter the id of the corresponding row in idA3A2ownership?