Top 50+ Solved Relational Modal MCQ Questions Answer

From 16 to 23 of 23

Q. The term _______ is used to refer to a row.

a. Attribute

b. Tuple

c. Field

d. Instance

  • b. Tuple

Q. The term attribute refers to a ___________ of a table.

a. Record

b. Column

c. Tuple

d. Key

  • b. Column

Q. The tuples of the relations can be of ________ order.

a. Any

b. Same

c. Sorted

d. Constant

  • a. Any

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

  • a. A superkey is an attribute or a group of multiple attributes that can uniquely identify a tuple

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

  • c. The state of the database system at any given point of time

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

  • c. A foreign key is an attribute of a relation that is a primary key of another relation
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