Extended ER Features Quiz Questions and Answers PDF Download eBook p. 274
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"A subclass also inherits participation in the relationship sets in which its superclass is", extended er features Multiple Choice Questions (MCQ) with choices invoked, called, participating, and executing for online computer engineering classes. Learn database design and er model questions and answers with free online certification courses to learn free online courses.
Quiz on Extended ER Features PDF Download eBook
MCQ: A subclass also inherits participation in the relationship sets in which its superclass is
- Called
- Invoked
- Participating
- Executing
C
MCQ: A superkey may contain extraneous
- Attributes
- Keys
- Instances
- Entries
A
MCQ: We can write 'relation A contains relation B' as
- exists (B except A)
- exists (A except B)
- notexists (A except B)
- notexists (B except A)
D
MCQ: High throughput can be obtained by system component's
- Low utilization
- High utilization
- Low responses
- High responses
B
MCQ: Any database modification that would cause a null to be inserted in an attribute declared to be not null generates an
- Exception
- Rejection
- Output
- Error
D