For example, if there is a use case to make a room booking, there must also be computation rules to determine the room charges.

例如，如果有一个用例是进行一个房间预订，也必须有一个计算规则来确定房间费用。

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Note, not all products have related association rules, as the support of the rules may have been too small during computation.

请注意，不是所有的产品都有相关的关联规则，因为这些规则的support在计算过程中可能会过小。

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Constraints (e.g., a payment cannot exceed a certain value) and derivation rules (e.g., the computation of interest), especially when these are relevant to more than one use case.

限制因素(举例来说，一个支付不能够超过一个特定的数值)和推导规则(举例来说，利息计算)，尤其当这些不仅仅与一个用例相关时。

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