Which of the following is a trivial functional dependency?

8. Which of the following is a trivial functional dependency?

  1. A->B, if B is a subset of A
  2. A->A
  3. B->B
  4. All of the above

Answer: A) A->B, if B is a subset of A

Explanation:

These are the trivial functional dependencies -

  1. A->B
  2. A->A
  3. B->B

Comments and Discussions!





Languages: » C » C++ » C++ STL » Java » Data Structure » C#.Net » Android » Kotlin » SQL
Web Technologies: » PHP » Python » JavaScript » CSS » Ajax » Node.js » Web programming/HTML
Solved programs: » C » C++ » DS » Java » C#
Aptitude que. & ans.: » C » C++ » Java » DBMS
Interview que. & ans.: » C » Embedded C » Java » SEO » HR
CS Subjects: » CS Basics » O.S. » Networks » DBMS » Embedded Systems » Cloud Computing
» Machine learning » CS Organizations » Linux » DOS
More: » Articles » Puzzles » News/Updates

© https://www.includehelp.com some rights reserved.