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Both the UML use cases and the ODP community concept can be used to capture business requirements.
While the primary purpose of use cases is to describe interactions between the User and the System, the community concept has a broader business scope, allowing description of interactions between all roles in the system as well as capturing business context, effectively allowing the design of a business architecture.
In addition, the community concept directly supports the expression of hierarchical and federated arrangements between communities, by allowing a community at one level of abstraction to fulfil roles in higher-level communities.
The similarities and differences are summarized in the table below.
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