The data model produced from the reverse engineering process is a true logical model.
Answer: Option B
A. clearly understand the current structure and contents of the database only.
B. test any changes on a test database only.
C. create a complete backup of the operational database only.
D. All of the above should be done.
A. Changing a column data type from char to date
B. Changing a column data type from numeric to char
C. Both of the above actions should succeed
D. Neither of the above actions will succeed