Ask
Login
0
14kviews
List Relational-Algebra Operations. Explain any two using MapReduce.
written 5.1 years ago by gravatar for swatisharma swatisharma • 1.3k modified 4.0 years ago by gravatar for prashantsaini prashantsaini • 0
big data analytics
ADD COMMENT EDIT
1 Answer
3
1.1kviews
written 5.1 years ago by gravatar for teamques10 teamques10 ★ 65k

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 $6_c (R)$

  • Selection really do not need the …

Create a free account to keep reading this post.

and 5 others joined a min ago.

ADD COMMENT EDIT
Please log in to add an answer.