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List Relational-Algebra Operations. Explain any two using MapReduce.
written 6.0 years ago by gravatar for swatisharma swatisharma • 1.3k modified 4.9 years ago by gravatar for prashantsaini prashantsaini • 0
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written 6.0 years ago by gravatar for teamques10 teamques10 ★ 69k

Relational Algebra Operations:

  1. Selection.

  2. Projection.

  3. Union & Intersection.

  4. Natural Join.

  5. Grouping & Aggregation.

Selection:

  • Apply a condition c to each taple in the relation and produce as output only those tuples that satisfy c.

  • The result of this selection is denoted by 6c(R)

  • Selection really do not need the …

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