The WS-Transaction specification describes two coordination types, one called atomic transaction (at) and the other called business activity (BA).

WS - transaction规范描述了两种协调类型，一种是原子事务(atomic transaction, at)，另一种是业务活动(business activity, BA)。

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Web Services Business Activity (WS-BA) helps standardize the way transactions are rolled back in a multi-phase commit process.

Web服务业务活动(WS - BA)帮助规范化多阶段提交过程中事务的回滚方式。

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