[CCCure CISSP] CISSPstudy Digest, Vol 20 Polyinstantiation vs Polymorphism?

[twitwicki at hannaford.com]

All,
      Here's a question that come out of a sample question that I've been
puzzling over:

Are Database Views an example of Polymorphism or Polyinstantiation?
The case for Polymorphism is that the different output is produced from the
same input to two different objects - the "objects" in this case being
different views of the database.  This is the author's answer.
The case for Polyinstantiation is that it is frequently used to
hide/replace attributes that may not be accessed by a lower security level
such as in preventing inference attacks.

Any insight from the group would be appreciated.  By the way, my exam date
is Feb 20 in Boston.  I feel prepared, but there is a lot of material and
my fear is that some questions may go deeper into some areas.  Wish me
luck!

Tom Witwicki, CIPP
Director, Information Security
Hannaford Bros. Co.
207-885-2073

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