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Relational Model (Relational Algebra, Relational Calculus) DBMS Aptitude Questions and Answers Page 2

List of Relational Model (Relational Algebra, Relational Calculus) DBMS Aptitude Questions and Answers

6) Which symbol is used for Cartesian product?
  1. ∏
  2. ∪
  3. −
  4. Χ
Answer

7) Which symbol is used for Union?
  1. ∏
  2. ∪
  3. −
  4. Χ
Answer

8) Which symbol is used for Set Difference?
  1. ∏
  2. ∪
  3. −
  4. Χ
Answer

9) Which symbol is used for Select Operation?
  1. σ
  2. ∪
  3. −
  4. Χ
Answer

10) Which symbol is used for Rename Operation?
  1. σ
  2. ∪
  3. −
  4. ρ
Answer








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