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If the application software dealt directly with the database, such a change in the
data's format would be reflected in the need to modify all other application
programs dealing with the same database. Thus, the change required by the
Figure 9-3 An onion-skin diagram of a database system In summary, a database
system is constructed from layers in much the same manner as an operating
system. In fact, the onion-skin diagram used to describe the architecture of an ...
Because of this problem, hierarchical database management systems allow
several different tree structures to be applied to the same physical database.
Thus, if we were faced with the task of finding the employee history of a certain
job, we ...
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This book was assigned reading for the opening class to my MSIT. I found it a great refresher for a large part of my original CS degree. It is well put together and fairly easy to read. Lots of useful ... Read full review
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PART ONE Machine Architecture
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