[Solved] Which of the following steps may not be used to define the existing data model as a precursor to re-engineering a new database model:

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Q.	Which of the following steps may not be used to define the existing data model as a precursor to re-engineering a new database model:
A.	build an initial object model
B.	determine candidate keys
C.	refine the tentative classes
D.	discover user interfaces
Answer» D. discover user interfaces
Explanation: once information defined in the preceding steps is known, a series of transformations can be applied to map the old database structure into a new database structure.

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