取消设计器事务后，事务处理机制尝试回滚事务中到目前为止所做的更改。

When a designer transaction is canceled, the transaction processing mechanism attempts to roll back the changes that have been made so far in the transaction.

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数据库技术的引入弥补了HLA缺乏事务处理机制这一缺陷，扩展了其数据管理能力。

Introduction of database technology into HLA provides the run-time infrastructure with transaction mechanism, so it can enhance the data management ability in HLA.

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当然，XML数据库也必须具备完善的事务处理机制，这对于XML数据库多用户并发访问时极其重要的。

Certainly, XML database must have a sound mechanism for transaction processing that is an extremely important to concurrent access for multi-user.

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