Course(course_id,sec_id,semester) Here the course_id,sec_id and semester are __________ and course is a _________ a) Tuple, Attributes b) Attributes, Relation
View QuestionA relational database consists of a collection of
a) Tables b) Keys c) Fields d) Records Answer: a Explanation: Fields are the column of the relation or ...
View QuestionDatabase __________ which is the logical design of the database, and the database _______ which is a snapshot of the data in the database at a given instant in time.
a) Relation, Domain b) Instance, Schema c) Relation, Schema d) Schema, Instance Answer: ...
View QuestionA ________ in a table represents a relationship among a set of values.
a) Entry b) Column c) Row d) Key Answer: c Explanation: Column has only one set of values. Keys ...
View QuestionThe tuples of the relations can be of ________ order.
a) Any b) Constant c) Same d) Sorted Answer: a Explanation: The values only count. The order of the ...
View QuestionThe term _______ is used to refer to a row.
a) Field b) Instance c) Tuple d) Attribute Answer: c Explanation: Tuple is one entry of the ...
View QuestionWhich one of the following attribute can be taken as a primary key?
a) Department b) Name c) Street d) Id Answer: d Explanation: The attributes name, street and department can repeat ...
View QuestionThe term attribute refers to a ___________ of a table.
a) Tuple b) Column c) Key d) Record Answer: b Explanation: Attribute is a specific domain in the relation ...
View QuestionA domain is atomic if elements of the domain are considered to be ____________ units.
a) Different b) Constant c) Indivisible d) Divisible Answer: c Explanation: Indivisible
View QuestionFor each attribute of a relation, there is a set of permitted values, called the ________ of that attribute.
a) Set b) Domain c) Schema d) Relation Answer: b Explanation: ...
View Question