Discussion:
Question: Does this statement still hold true? Does Oracle not allow the deletion of fields and if so, how do you handle this? If so why? Seems like not having this ability would make modifications of a database more challenging.
Also... the same question, "For example, some systems, including Oracle, do not allow you to reduce the size of a field or to change its data type."
Have these particular barriers, for lack of a better word, ever discouraged your opinion of Oracle?