Register

NIELIT Scientific Assistant A 2020 November: 86

• recategorized by
481 views
2 votes
2 votes

A minimal super key (i.e, one of the super keys for which no proper subset is a superkey) is called:

  1. Super Key
  2. Candidate Key
  3. Primary Key
  4. Both Candidate and Primary Key
• recategorized by
User Avatar

1 Answer

Voting & Accepting an answer helps improve the community
Answer:
← PreviousNext →
← Previous in categoryNext in category →

Related questions

2 votes
2 votes
1 answer
1
gatecse asked Dec 9, 2020
437 views
NIELIT Scientific Assistant A 2020 November: 72
Let $\text{R=(A,B,C,D,E)}$ having following $\text{FDs}.\;\text{F}=\{\text{A}\rightarrow \text{BC, CD} \rightarrow \text{E, B}\rightarrow \text{D, E}\rightarrow \text{A}\}.$ Which of the following is not a Candidate key? $\text{A}$ $\text{B}$ $\text{E}$ $\text{BC}$
Let $\text{R=(A,B,C,D,E)}$ having following $\text{FDs}.\;\text{F}=\{\text{A}\rightarrow \text{BC, CD} \rightarrow \text{E, B}\rightarrow \text{D, E}\rightarrow \text{A}\...
User Avatar
1 votes
1 votes
1 answer
2
gatecse asked Dec 9, 2020
490 views
NIELIT Scientific Assistant A 2020 November: 73
Anomalies are avoided by splitting the offending relation into multiple relations, is also known as __________. Accupressure Decomposition Precomposition Both decomposition & precomposition
Anomalies are avoided by splitting the offending relation into multiple relations, is also known as __________.AccupressureDecompositionPrecompositionBoth decomposition &...
User Avatar
1 votes
1 votes
2 answers
3
gatecse asked Dec 9, 2020
522 views
NIELIT Scientific Assistant A 2020 November: 97
Domain constraints, functional dependency and referential integrity are special forms of _______ Foreign key Primary key Assertion Referential constraint
Domain constraints, functional dependency and referential integrity are special forms of _______Foreign keyPrimary keyAssertionReferential constraint
User Avatar
1 votes
1 votes
1 answer
4
gatecse asked Dec 9, 2020
540 views
NIELIT Scientific Assistant A 2020 November: 45
$(<\text{ALL})$ comparison operator means: more than the maximum value in the subquery less than the minimum value in the subquery is equivalent to $\text{IN}$ none of the options
$(<\text{ALL})$ comparison operator means:more than the maximum value in the subqueryless than the minimum value in the subqueryis equivalent to $\text{IN}$none of the op...
User Avatar
Link Copied!