Exam 7: Structuring System Requirements: Conceptual Data Modeling

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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.

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A set of two or more multivalued attributes that are logically related defines:

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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.

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The goal of conceptual data modeling is to capture as much of the meaning of data as possible.

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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 good number of alternatives to generate is:

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Which of the following is a true statement?

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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

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System features might include:

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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

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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.

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Relationships are labeled with verb phrases.

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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

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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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During systems design:

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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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