Exam 6: Data Modeling
Exam 1: The Systems Analyst and Information Systems Development78 Questions
Exam 2: Project Selection and Management75 Questions
Exam 3: Requirements Determination75 Questions
Exam 4: Use Case Analysis69 Questions
Exam 5: Process Modeling75 Questions
Exam 6: Data Modeling78 Questions
Exam 7: Moving Into Design66 Questions
Exam 8: Rchitecture Design64 Questions
Exam 9: User Interface Design69 Questions
Exam 10: Program Design68 Questions
Exam 11: Data Storage Design74 Questions
Exam 12: Moving Into Implementation67 Questions
Exam 13: Transition to the New System67 Questions
Exam 14: The Movement to Objects67 Questions
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If the logical data model does not contain attributes that have repeating values it is in _____.
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(Multiple Choice)
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Correct Answer:
B
Entities are further designed with attributes.
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(True/False)
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Correct Answer:
True
Department stores have bridal registries.This registry keeps information about customers (the couple that is to be wed)prior to the wedding and keeps the data for a period of two years after the wedding (for returns or late purchasers),the products that the store carries,and the products that each couple has included in the registry.Couples typically register for a large number of products and many couples register for the same products.Draw an entity relationship diagram for Target's bridal registry:
(Essay)
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Anthony is working on the cardinality of doctors and patients in a large urban hospital.With the large number of doctors with varying specialties and patients that may have more than one aliment,he thinks the relationship might be noted as:
(Multiple Choice)
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Entity Relationship Diagrams show relationships between entities that are _____.
(Multiple Choice)
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Relationships are some type of information that is captured about entities.
(True/False)
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One of the most commonly used techniques for data modeling is ERD's.
(True/False)
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A logical data model that does not lead to repeating fields and that the data models leads to tables containing fields that are dependent on the whole identifier is in _____ normal form.
(Multiple Choice)
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CRUD stands for create,read,update and delete and can be used to verify DFDs and ERDs.
(True/False)
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Discuss what should be done to ensure that the entity relationship diagrams balance with the data flow diagrams.What is the consequence of failing to balance these models?
(Essay)
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An ERD is a picture which shows the information that is ________ by a business system?
(Multiple Choice)
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