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KPGCET-CSE-2019-39

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Relational Algebra is integral part of DBMS because it 

  1. contains operators analogous to query language queries.
  2. contains relational operators analogous to query language queries.
  3. is used as intermediate language in translating programming language programs into query 
    language queries
  4. is used as intermediate language in translating query language queries into programming language programs.
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