I should have also included the on-line Oracle documentation... I realize that Oracle Press is not exactly the same thing as official Oracle documentation, however there is an implied authority there, much like the Microsoft Press books.
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If most people are not willing to see the difficulty, this is mainly because, consciously or unconsciously, they assume that it will be they who will settle these questions for the others, and because they are convinced of their own capacity to do this. -Friedrich August von Hayek
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