a) Desciptive b) Derived c) Recursive d) Relative Answer: a Explanation: Consider ...
View QuestionWhich of the following is a single valued attribute
a) Register_number b) Address c) SUBJECT_TAKEN d) Reference Answer: a Explanation: Register_number
View QuestionWhich of the following can be a multivalued attribute?
a) Phone_number b) Name c) Date_of_birth d) All of the mentioned Answer: a Explanation: Name and Date_of_birth cannot hold ...
View QuestionNot applicable condition can be represented in relation entry as
a) NA b) 0 c) NULL d) Blank Space Answer: c Explanation: NULL always represents that the value ...
View QuestionThe attribute AGE is calculated from DATE_OF_BIRTH. The attribute AGE is
a) Single valued b) Multi valued c) Composite d) Derived Answer: d Explanation: The value for this ...
View QuestionThe attribute “name” could be structured as an attribute consisting of first name, middle initial, and last name. This type of attribute is called
a) Simple attribute b) Composite attribute c) Multivalued attribute d) Derived attribute Answer: b Explanation: Composite attributes can be ...
View QuestionThe function that an entity plays in a relationship is called that entity’s _____________
a) Participation b) Position c) Role d) Instance Answer: c Explanation: A relationship is ...
View QuestionThe descriptive property possessed by each entity set is _________
a) Entity b) Attribute c) Relation d) Model Answer: b Explanation: Possible attributes of the instructor entity set ...
View QuestionEntity is a _________
a) Object of relation b) Present working model c) Thing in real world d) Model of relation
View QuestionAn ________ is a set of entities of the same type that share the same properties, or attributes.
a) Entity set b) Attribute set c) Relation set d) Entity model Answer: a Explanation: An entity is a ...
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