He was always quite proud of that effort.
Even as the book changed with succeeding editions and Jonathan moved on to other
companies, he continued to feel that this book remained an important accomplishment
in his life.
xii | Preface
Some explanations of how Oracle works are fundamental to the database and have
not changed in subsequent editions of the book, so some of Jonathan??™s original work
remains here, although much of the surrounding text is now considerably different.
Of course, some entire sections describing the complex steps that were once needed
to manage and deploy older releases of the database are no longer relevant and thus
are no longer included. Jonathan would probably view Oracle??™s self-managing and
self-tuning improvements as incredible achievements, but would also wonder
whether it is a good thing that people can know even less today about how the database
works but still deploy it.
So, we introduce you to the fourth edition of Oracle Essentials. We have made many
changes in this edition. Some, of course, result from changes in features in Oracle
Database 11g and the ways that youcan now use and deploy the latest release of the
database.
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