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What is System R? What are its two major subsystems?
System R was intended and developed over a period of 1974-79 at IBM San Jose Research Center. It is a prototype and its purpose was to illustrate 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
Research Storage
System Relational Data System.
Explain the main advantages of DBMS over File Oriented System ?
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What is Relational Algebra? Relational algebra is a Procedural query Language?
Describe multi key files
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what are the type of the database
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