What is the role of data models in database design?
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Oil companies have functional databases, and the consumer-product industry tends to have product databases. How do financial institutions and the airline industry classify their enterprise database systems? Use Internet sources to find the answer, and record your findings.
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Describe the structure of the ANSI/SPARC three-schema architecture. Compare this structure with that of the two-schema architecture inherent in a file-processing system?
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