Exam 8: Structuring System Data Requirements

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An __________ is a candidate key that has been selected as the unique,identifying characteristic for an entity type.

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Match each of the following terms with its corresponding definition. -A singular noun is used to name an entity type.

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The bottom-up approach to data modeling derives a data model by reviewing specific business documents.

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A faculty identification number can serve as an identifier.

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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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A multivalued attribute is an attribute that may take on more than one value for each entity instance.

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Match each of the following terms with its corresponding definition. -To illustrate a multivalued attribute,enclose it in curly brackets.

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Match each of the following terms with its corresponding definition. -A generic entity type that has a relationship with one or more subtypes.

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Match each of the following terms with its corresponding definition. -To illustrate a multivalued attribute,separate the repeating data into another entity,then using a relationship,link the weak entity to its associated regular entity.

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Match each of the following terms with its corresponding definition. -The name of the identifier of each entity is underlined on an E-R diagram.

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Match each of the following terms with its corresponding definition. -Specifies that an entity instance can simultaneously be a member of two (or more)subtypes.

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Referencing an employee entity,an employee's skills are a multivalued attribute.

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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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