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Q1. Consider the given relation:

CAR_SALE(Car#, Date_sold, Salesman#, Commission%, Discount_amt)

Suppose that a car might be sold by multiple salesmen, and therefore {Car#, Salesman#} is the primary key. Additional dependencies are:

Date_sold →Discount_amt and
Salesman# → Commission%

Based on the given primary key, is this relation is 1NF, 2NF or 3NF? describe why or why not? How would you successively normalize it wholly?

Q2. A set of FDs for the relation R{A, B, C, D, E, F} is AB → C, C → A, BC → D, ACD → B, BE → C, EC → FA, CF → BD, D→ E. Find out a minimum cover for this set of FDs.

Q3. Describe multi-valued dependencies and as well describe 4NF with suitable illustration.

DBMS, Programming

  • Category:- DBMS
  • Reference No.:- M910449

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