Sign up now
to enroll in courses, follow best educators, interact with the community and track your progress.
Download
Find super key (in DBMS )
631 plays

More
In this lesson Nisha Mittal will provide solutions of questions for NTA NET computer science examination

Nisha Mittal is teaching live on Unacademy Plus

Nisha Mittal
🌟 MCA Gold Medalist 🌟 Star Educator 🌟Gate Qualified 🔴UGC NET qualified🔴🌟YouTuber ☆🌟BOOK published on LINUX ADMINISTRATION by kalyani publish

U
Unacademy user
  1. Super key - Candidate Key + other attributes.


  2. Super key - Candidate Key + other attributes.


  3. Super key - Candidate Key + other attributes.


  4. Atrelation R/AB.CD) and Fts C-9B D>A,B,C Which of the following are not a superkey for the above relation? A. D B. B,D C. B,C,D D. All are superkeys E. None are superkeys


  5. - C-9B D A,B,C Which of the following are not a superkey for the above relation? A. D B. B,D C. B,C,D D. All are superkeys E. None are superkeys D is a candidate key Therefore, all of the options are superkeys


  6. Which of the following is NOT a superkey in a relational schema with attributes V, W, X, Y, Z and primary key V Y ? (A) V X Y2 (B) V W X7 (C) V W XY (D) V W X YZ


  7. Which of the following is NOT a superkey in a relational schema with attributes V, W, X, Y, Z and primary key V Y? (A) V X Y2 (B) V W X7 (C) V W XY (D) V W X YZ PRIMARY KEY = VY (B) Option, does not include Y which is a part of PK or candidate key


  8. unacademy All live & Lessons by all Weekly quizzes structured courses top Educators & doubt-clearing 001-11 US NISHA MITTAL Referral Code - nishamittal86-2742