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Question
An attribute that can have more than one value for each entity instance is referred to as:A) a gerund.
B) a multivalued attribute.
C) a nonexclusive attribute.
D) a data replica.
E) composite attribute
Answer
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Related questions
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All of the following are types of user documentation EXCEPT:
A) release description.
B) reference guide.
C) acceptance sign-off.
D) entity-relationship diagrams.
E) user's guide.
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Changing over from the old information system to a new one by turning off the old system as the new one is turned on best describes:
A) phased installation.
B) single location installation.
C) parallel installation.
D) direct installation.
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B) alpha testing.
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B) integration testing.
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D) implementation.
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Testing each module alone in an attempt to discover any errors that may exist in the module's code is referred to as:
A) unit testing.
B) system testing.
C) stub testing.
D) singular testing.
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A primary objective of using automated tools for systems development and maintenance is to change radically how code and documentation are modified and updated.
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If OrderNumber serves as the primary key in the ORDER relation and also appears as a nonkey attribute in the INVOICE relation, then OrderNumber is said to be a:
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Q:
The primary deliverable from logical database design is:
A) normalized relations.
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Q:
Key physical database design decisions typically do not include:
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Multiple key retrieval is possible with sequential file organization.
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Sequential files are practical for random row retrievals.
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A recursive foreign key is a foreign key in a relation that references the primary key value of the same relation.
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