a) Relation b) Instance c) Table d) Column Answer: b
View QuestionIf you were collecting and storing information about your music collection, an album would be considered a(n) _____
a) Relation b) Entity c) Instance d) Attribute Answer: b Explanation: An entity ...
View QuestionWeak entity set is represented as
a) Underline b) Double line c) Double diamond d) Double rectangle Answer: d Explanation: Weak entity set is ...
View QuestionFor a weak entity set to be meaningful, it must be associated with another entity set, called the
a) Identifying set b) Owner set c) Neighbour set d) Strong entity set Answer: a
View QuestionAn entity set that does not have sufficient attributes to form a primary key is termed a __________
a) Strong entity set b) Variant set c) Weak entity set d) Variable set Answer: c
View QuestionWe indicate roles in E-R diagrams by labeling the lines that connect ___________ to __________
a) Diamond , diamond b) Rectangle, diamond c) Rectangle, rectangle d) Diamond, rectangle Answer: d Explanation: Diamond represents a ...
View QuestionConsider a directed line(->) from the relationship set advisor to both entity sets instructor and student. This indicates _________ cardinality
Consider a directed line(->) from the relationship set advisor to both entity sets instructor and student. This indicates ...
View QuestionThe Rectangles divided into two parts represents
a) Entity set b) Relationship set c) Attributes of a relationship set d) Primary key Answer: a Explanation: The ...
View QuestionThe entity relationship set is represented in E-R diagram as
a) Double diamonds b) Undivided rectangles c) Dashed lines d) Diamond Answer: d Explanation: Dashed lines link attributes ...
View QuestionWhich of the following gives a logical structure of the database graphically?
a) Entity-relationship diagram b) Entity diagram c) Database diagram d) Architectural representation Answer: a Explanation: E-R ...
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