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中文摘要：
针对虚拟样机协同设计中数据量大、事务长、多层嵌套的问题,提出了一种基于事务语义的并发控制策略,阐述了并发控制机制中事务结构、事务提交、锁机制和冲突协调等关键性问题。根据数据要求生成复制事务,事务发生改变后,其他站点能够实时显示图形、实时读取数据。实例证明,基于事务语义的并发控制策略保证协同用户自由地操作共享资源,提高了并发控制的可靠性和数据的一致性。
英文摘要：
To contrapose such problems as large volume of data, long-term transaction process and nested layer in collaborative of virtual prototype, this paper established a new strategy of collaborative design. Then discussed the relationships among structure, transaction submission, the inter-lock mechanism and conflict harmonization. According data requirements to replicate contents, other stations can read data and show the graph when data are changed. It is verified that the Concurrency control strategy not only enabled the collaborative users handle shared resources freely, but also ensured the agility concurrency control and the consistency of real-time data by an application example.
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