Study Set Content:
a clearly defined area within the real-world environment, with a well-defined scope and boundaries that will be systematically addressed.
problem domain
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a relatively simple representation, usually graphical, of more complex real-world data structures.
data model
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Data Model Basic Building Blocks
entity
attributes
relationship
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a characteristic of an entity
attributes
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a person, place, thing, or event about which data will be collected and stored.
entity
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describes an association among entities.
relationship
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a restriction placed on the data. _______ are important because they help to ensure data integrity.
constraints
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a brief, precise, and unambiguous description of a policy, procedure, or principle within a specific organization.
business rule
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a clearly defined area within the real-w...
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a relatively simple representation, usua...
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Data Model Basic Building Blocks
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a characteristic of an entity
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a person, place, thing, or event about w...
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describes an association among entities.
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a restriction placed on the data. ______...
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a brief, precise, and unambiguous descri...
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