July 2010
Intermediate to advanced
448 pages
12h 22m
English
Content preview from Physical Database Design
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368 CHAPTER 16 Distributed Data Allocation
Both I/O time and network delay time for these data allocation methods can be
accurately estimated using the simple mathematical estimation models given in
Appendix A.
16.5 Summary
Distributed database design requires one more step of analysis than centralized databases,
but there exists a set of basic principles we can use for everyday design decisions. Repli-
cated data allocation methods can be simply expressed and implemented to minimize the
time to execute a collection of transactions on a distributed database. The methods take
into account the execution times of remote and local database transactions ...
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