Exam 7: Structuring System Requirements: Conceptual Data Modeling
Exam 1: The Systems Development Environment116 Questions
Exam 2: The Sources of Software107 Questions
Exam 3: Managing the Information Systems Project133 Questions
Exam 4: Systems Planning and Selection134 Questions
Exam 5: Determining System Requirements136 Questions
Exam 6: Structuring System Requirements: Process Modeling149 Questions
Exam 7: Structuring System Requirements: Conceptual Data Modeling180 Questions
Exam 8: Designing the Human Interface133 Questions
Exam 9: Designing Databases157 Questions
Exam 10: Systems Implementation and Operation151 Questions
Exam 11: object-Oriented Analysis and Design131 Questions
Exam 12: Agile Methodologies127 Questions
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A relationship must be turned into an associative entity when the associative entity has other relationships with entities besides the relationship that caused its creation.
(True/False)
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A set of two or more multivalued attributes that are logically related defines:
(Multiple Choice)
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One way to handle repeating data within an entity is to separate the repeating data into another entity, called a weak entity.
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When performing requirements structuring steps, you should match all entities with the data stores appearing on a data-flow diagram.
(True/False)
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The goal of conceptual data modeling is to capture as much of the meaning of data as possible.
(True/False)
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A deliverable from conceptual data modeling is a set of entries about data objects to be stored in the project dictionary or repository.
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A unary relationship is the most common type of relationship encountered in data modeling.
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Match each of the following terms with its corresponding definition.
-A named property or characteristic of an entity that is of interest to the organization
(Multiple Choice)
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For each of the examples listed below, indicate if it is a relationship, an entity, or an attribute.(Answers may occur more than once.)
-invoice
(Multiple Choice)
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During the alternative generation and selection step of the analysis phase, you would divide the requirements into different sets of capabilities ranging from the bare minimum that users would accept to the most elaborate and advanced system the company could afford to develop.
(True/False)
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For each of the examples listed below, indicate if it is a relationship, an entity, or an attribute.(Answers may occur more than once.)
-sells
(Multiple Choice)
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The bottom-up approach to data modeling derives a data model by reviewing specific business documents.
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Determining requirements and structuring requirements are associated with:
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An enterprise-wide data model is prepared during systems implementation and operation.
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High-end alternatives not only solve the problem in question but include many extra features as well.
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