A business service is a service that a business unit elects to expose at its boundary, interfacing with its clients, partners, or other business units.
业务服务是业务单位选择在其边界公开的服务，通过接口与其客户、合作伙伴或其他业务单位连接。
2
Regarding the scope of unit of work and transaction boundary demarcation, there are 3 patterns.
考虑到工作单元的范围和事务边界的划分，有3中模式。
3
It provides an extended unit-of-work scope beyond the method boundary for local transaction based resource managers.