to attack eachother. > > Depending on what you're modelling, even this could be too simple -- for > example, while a single wolf is unlikely to attack a lion, a pack of > wolves have a lot more probability of doing so. > > Do you keep packs of wolves in your barn? If so, watch your lions. Well from the previous thread that discussed the use of the <animal> table and sub-set tables <prey> and <preditor>, if a preditor can attach a prey item or preditor item, then a table relation only needs to be created between <preditor> and <animal>. This way only preditors can attack, but they can attach any other animal preditor or prey. Regards, Richard Broersma Jr.
