Choose the correct statement regarding superkeys – McqOptions

MCQOPTIONS

1.	Choose the correct statement regarding superkeys
A.	A superkey is an attribute or a group of multiple attributes that can uniquely identify a tuple
B.	A superkey is a tuple or a set of multiple tuples that can uniquely identify an attribute
C.	Every superkey is a candidate key
D.	A superkey is an attribute or a set of attributes that distinguish the relation from other relations
Answer» B. A superkey is a tuple or a set of multiple tuples that can uniquely identify an attribute

Discussion

No Comment Found

Related MCQs

State true or false: If a relation consists of a foreign key, then it is called a referenced relation of the foreign key dependency.
Choose the option that correctly explains in words, the function of the following relational algebra expressionσyear≥2009 (book ⋈ borrow)
Statement 1: A tuple is a row in a relation Statement 2: Existence of multiple foreign keys in a same relation is possible
What does the “x” operator do in relational algebra?
What action does ⋈ operator perform in relational algebra
STATE_TRUE_OR_FALSE:_IF_A_RELATION_CONSISTS_OF_A_FOREIGN_KEY,_THEN_IT_IS_CALLED_A_REFERENCED_RELATION_OF_THE_FOREIGN_KEY_DEPENDENCY.?$
CHOOSE_THE_OPTION_THAT_CORRECTLY_EXPLAINS_IN_WORDS,_THE_FUNCTION_OF_THE_FOLLOWING_RELATIONAL_ALGEBRA_EXPRESSION?$
Statement 1: A tuple is a row in a relatio?
What is the method of specifying a primary key in a schema description?
An attribute is a __________ in a relation.