协同设计中工程数据库并发控制研究  

Research on Concurrency Control of Engineering Database in Collaborative Design

作　　者：张雪平[1] 殷国富[2] 王伟[2] 

机构地区：[1](1宜宾学院电子信息系,宜宾644007 [2]四川大学制造科学与工程学院,成都610065

出　　处：《机械科学与技术》2006年第3期345-347,351,共4页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(50275100)资助

摘　　要：针对协同设计中数据量大、事务长、多层嵌套的特点,建立了一种实时协同设计并发控制模型,采用基于语义事务的并发控制策略,提出了图档数据库存储结构。建立了事务结构、事务提交、锁机制和冲突协调多方面的协同联系。实例证明,并发控制策略不仅让协同用户自由地操作共享资源,还能够保证数据的实时一致性。Collaborative design is characterized by large volumes of data, long-term transaction processes and nested layers. Therefore a concurrency control model for real-time collaborative design is established. A new concurrency control strategy based on semantic meanings and memory structures of drawings are adopted. The relationships among transaction structures, transaction submission, inter-lock mechanisms and conflict harmonization are established. Instances prove that the concurrency control strategy not only enables its collaborative users to handle shared resources freely but also guarantees the consistency of real-time data.

关 键 词：协同设计 工程数据库 并发控制 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]