A system step, however, is not a good basis for delineating a use case transaction, for it depends on the granularity of the description of a flow how many steps you count.

但是，一个系统步骤并不是描述用例事务的一个较好的基础，因为它取决于对您计算的多少步骤的描述。

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Thus asynchronous messaging may be employed as the integration basis if high transaction volumes are expected.

因此，如果期望处理大量事务，可以将异步消息传递用作集成的基础。

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In this environment, the system user asserts the identity of the end user in a per transaction basis.

在这个环境中，系统用户按逐个事务断言终端用户的身份。

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