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Question
If an input from a source appears on a level-0 diagram, it must:A) appear on the context diagram.
B) be connected to a data flow.
C) be connected to a sink.
D) be connected to a data store.
E) be connected to two entities.
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:
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B) single location installation.
C) parallel installation.
D) direct installation.
E) rotation installation.
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The organizational process of changing over from the current information system to a new one best defines:
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B) alpha testing.
C) beta testing.
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The process of bringing together all of the modules that comprise a program for testing purposes is referred to as:
A) unity testing.
B) integration testing.
C) system testing.
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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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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View integration is the last step of logical database design.
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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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