Question: Q7.9. Your project manager, just returning from a conference, has decided to discuss data modeling with you. She is asking if you are creating a

Q7.9. Your project manager, just returning from a conference, has decided to discuss data modeling with you. She is asking if you are creating a conceptual or a logical data model. What is the difference?

(a) Just different terminology. One is using information engineering; the other is using the object-oriented approach.

(b) The conceptual data model is used in the analysis phase, and the logical data model is used in the design phase.

(c) The conceptual data model is high level, not showing attributes, subtypes, or cardinality. The logical data model is a fully defined and normalized to third normal form.

(d) The conceptual data model is used to communicate with the customer, and the logical data model is used to communicate with the developer.

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