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What is System R? What are its two major subsystems ?

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What is System R? What are its two major subsystems ?
posted Jan 30, 2014 by Anuj Yadav

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System R was designed and developed over a period of 1974-79 at IBM San Jose Research Center. It is a prototype and its purpose was to demonstrate that it is possible to build a Relational System that can be used in a real life environment to solve real life problems, with performance at least comparable to that of existing system.
Its two subsystems are
1. Research Storage
2. System Relational Data System.

answer Feb 1, 2014 by Vikas Upadhyay
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