Amazon的zoo的设计问题# JobHunting - 待字闺中
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4. OOD of a zoo, different types of animals (carnivores/herbivores,
hierarchical inheritance), cages (cage type, cage size, number of each type
of animal can be in the same cage), some of them cannot be put in the same
cage, need predator and prey relationships, what if, for instance, lion eat
1million different animals? i told him i can just put Herbivores in the prey
list of lion. he then asked what if mouse is herbivore, and lions don't eat
mice? （此题也是不断加要求，搞得相当乱）
有两个问题：
1) relationship怎么表示好？可不可以每个animal类内部有一个predator的list？
2) "what if, for instance, lion eat 1 million different animals?"这个怎么答
好？
hierarchical inheritance), cages (cage type, cage size, number of each type
of animal can be in the same cage), some of them cannot be put in the same
cage, need predator and prey relationships, what if, for instance, lion eat
1million different animals? i told him i can just put Herbivores in the prey
list of lion. he then asked what if mouse is herbivore, and lions don't eat
mice? （此题也是不断加要求，搞得相当乱）
有两个问题：
1) relationship怎么表示好？可不可以每个animal类内部有一个predator的list？
2) "what if, for instance, lion eat 1 million different animals?"这个怎么答
好？