Preface
Who would have thought that just one year after the publication of Oracle PL/SQL Programming, [1] a 916-page tome on "everything PL/SQL", I'd end up writing a second book about the PL/SQL language? Although back in September 1995 I wasn't arrogant enough to think that I knew all there was to know about PL/SQL, I also underestimated how much more I had still to learn!
[1] Published by O'Reilly & Associates, Inc., 1995.
I am firmly of the belief that one never stops learning—as long as one is open to learning. The area of PL/SQL in which I needed lots more education turned out to be packages. In my first book I explained how to build and use packages. I even provided lots of examples of package construction. But I started to realize that this wasn't enough. Over the past year, I have been designing and developing a set of packages to help me build PL/SQL-based applications. This was a thoroughly selfish effort: I wanted to be as productive as possible, and I wanted to overcome a number of weaknesses—however transient—in the PL/SQL language. In the process of writing this software, I learned a good deal about the best ways to build PL/SQL code, especially regarding packages. I also discovered some very interesting techniques that can make packaged software more maintainable, accessible, and easy to use.
As my thinking on the construction of packages crystallized, I began to view all of my packages as a library of code that could be used by any PL/SQL developer. I also realized ...
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