【摘要】 文中提出了一个集成数据库的科学工作流服务框架,它采用对象代理模型描述一系列科学任务的执行过程,使得工作流管理操作以类似于传统数据库管理操作的方式来完成.同时,基于对象代理数据库中的双向指针机制,文中提出了一种新的数据跟踪方法,该方法能提供比注释或反向方法更高的性能,不仅节省了大量的存储空间,而且减少了额外的计算代价,为了进一步提高数据跟踪的高效性,文中也提出了一种部分物化中间数据模式,实验显示它具有较好的系统性能.更多还原

【Abstract】 This paper proposes a DB-integrated scientific workflow service framework which adopts object deputy model to describe the execution of a series of scientific tasks,thus allows workflow management operations to be performed in a way analogous to traditional database management operations.Furthermore,based on bi-directional pointer mechanism in object deputy database,this paper introduces a new data provenance method.This approach is much more efficient than annotation or inversion,which not only saves a lot of storage space,but also reduces the cost of extra computing.A partial materializing data schema is also presented to improve the efficiency of data tracking,and the experiment results show that it can provide a preferable system performance.更多还原