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Basic Model for Data Integration The distributed and staged design of data integration model is suitable for our specified environment. It brings opportunities for performance improvement: (1) The staged design enables more work to be done in parallel; (2) The distributed design can coping with increasing query workload, taking advantage of the abundant computer nodes in grid; (3) it solves the problems of performance bottlenecks and single point of
Source publication
Since query processing of data integration needs to access data from numerous wide-distributed sources over network, it is crucial to investigate how to deal with the expensive communication overhead. A staged data integration model is introduced for grid environment in this paper. It takes advantage of the abundant computer nodes to process integr...
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Mediation techniques support integrated query processing among heterogeneous databases. While such techniques help data sharing among different distributed sources, they increase the risk for data security, such as violating access control rule. Successful protection of information by an effective access control mechanism is a basic requirement for...
Citations
The life span of flash memory, used for Embedded Controller, is mainly decided by the times of being erased, while the traditional process communication means should read and write the flash memory frequently or have lots of constraints for the using of SDRM. In order to minimize the number of erasing flash memory, this paper presents process communication based on proc VFS. The proc VFS is not connected with any physical device, process communication with it only works in the SDRM and does not erase the memory any more. Firstly, we illustrate the proc VFS working mechanisms, introduce the main points of running as a daemon in detail, and then present networked control systems(NCSs) based on implementation. The research displays that the proc VFS has obvious advantages to the traditional processes communications in minimizing the erasing number of memory.
