IN MY POINT OF VIEW:
WE CAN REDEFINE A DATA ITEM HAVE AN OCCURs CLAUSE.
but we cannot redefine a data item having occurs clause.
I suspect that ratner than "point of view" you might mean "it is my understanding".
When teaching, one must be careful NOT to say anything to do with what happens on the computer in terms of one's opinion or point of view. It is best for a teacher not to mention their "understanding". What they "believe" has nothing to do with technical information. The teacher should only present what actually does
happen (and be able to answer questions factually when asked how/why "something" does happen). There is no penalty for answering a question with "I don't have the answer for "that", but i will find the answer". Of course, this cannot be the answer to too many questions - that would cause a penalty
I'm a firm believer that the teacher should have several years of actual experience (before attempting to teach a class) because otherwise, they really don't know the subject and give as much bad information as good and then some employer gets someone (the mistrained student) far less qualified than they should be. We see much of this on the forum.
Another thought. . . As most technical material is written in English (and many/most classes are presented in English) teachers should make a large (amount of time) investment becoming fluent in English. It is Critical
that technical information be presented exactly corret - not just "close".