Top 50+ Solved Relational Modal MCQ Questions Answer
Q. A ________ in a table represents a relationship among a set of values.
a. Column
b. Key
c. Row
d. Entry
Q. For each attribute of a relation, there is a set of permitted values, called the ________ ofthat attribute.
a. Domain
b. Relation
c. Set
d. Schema
Q. 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
Q. What is an Instance of a Database?
a. The logical design of the database system
b. The entire set of attributes of the Database put together in a single relation
c. The state of the database system at any given point of time
d. The initial values inserted into the Database immediately after its creation
Q. What is a foreign key?
a. A foreign key is a primary key of a relation which is an attribute in another relation
b. A foreign key is a superkey of a relation which is an attribute in more than one other relations
c. A foreign key is an attribute of a relation that is a primary key of another relation
d. A foreign key is the primary key of a relation that does not occur anywhere else in the schema