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Which of the following operation is allowed in relational algebra?
  • a)
    set intersection
  • b)
    set difference
  • c)
    natural join
  • d)
    All of the above
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which of the following operation is allowed in relational algebra?a)se...
Relational Algebra is a procedural query language, which takes Relation as input and generates relation as output.
All given operations are allowed in relational algebra.
Set intersection:
Suppose there are two tuples R and S. The set intersection operation contains all tuples that are in both R & S.
Set difference:
Suppose there are two tuples R and S. The set intersection operation contains all tuples that are in R but not in S.
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Which of the following operation is allowed in relational algebra?a)set intersectionb)set differencec)natural joind)All of the aboveCorrect answer is option 'D'. Can you explain this answer?
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