Exam 10: The Rea Approach to Business Process Modeling

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Discuss the concept of duality as it relates to modeling an economic transaction.

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REA resources are those things of economic value under the control of the enterprise including physical assets and employees.

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ER diagrams always label entity names in the singular noun form.

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Which of the following are characteristics of internal agents?

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Explain the rule for assigning foreign keys in a (1:M)association?

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Under the REA approach,support events may directly effect a change in resources.

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The letters 'R,' 'E,' and 'A' in the term "REA model" stand for resources,events,and actions.

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Define resources,economic events,and agents.

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Why would a company adopt the REA approach to database design?

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The concept of duality means that a REA diagram must consist of:

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Which of the following events would be least likely to be modeled in a REA diagram?

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Four basic forms of cardinality are possible: zero or one (0,1),one and only one (1,1),one or many (1,M),and many and only many (M,M).

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How are tables in a (M:M)association physically linked?

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Define duality.

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What are the two categories the REA model uses to describe events?

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Where a 1:M association exists between tables,the primary key of the 1 side is embedded in the table of the M side.

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What are the minimum number and type of event entities that an REA diagram must include?

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Define the value chain.

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In a REA diagram each economic event is always

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Explain the relationship between cardinality and association.

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