您必须确定应该在SOA活动的服务契约中加以表示的元素，因为不同的SOA活动需要不同的特征来确保成功。
You must identify the elements that should be represented in the service contract for your SOA initiative, as different SOA initiatives need different attributes to ensure success.
在交互过程中，服务契约与所有参与者进行绑定，包括服务本身和为特定的交互活动提供服务的元素。
A service contract is binding on all participants in the interaction, including the service itself and the element that provides it for the particular interaction in question.
它特定的显示服务提供者的各个部分在服务需求契约中扮演什么角色，以及合成元素完成业务的约束。
It shows, specifically, what parts of the service provider play roles in the service requirements contract and how constraints on the component fulfill business constraints.
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