Optimization of Distributed Database Systems and Computer Networks
Language: English
Published by Forgotten Books, 2018
- Softcover
- New
Seller: Forgotten Books, London, United KingdomForgotten Books
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Condition: New
US$ 17.62
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Print on Demand. This book presents a detailed study of distributed database systems and computer networks, offering a comprehensive model for their optimization. The author considers simultaneously the distribution of computation power, the allocation of programs and databases, and the assignment of communication lines, providing a more complete perspective than previous works in the field. The model developed by the author incorporates set-up costs and the return flow of information, addressing practical concerns often overlooked in other studies. Additionally, the author introduces a novel "Bounded Branch and Bound" algorithm, a powerful mathematical programming technique capable of solving large-scale integer nonlinear programming problems. This algorithm is more efficient than existing methods and can handle problems with nonlinear objective functions and constraints, making it applicable to real-life scenarios with set-up costs. The book concludes by discussing the significance of the model and the insights it provides, highlighting its relevance in the design of distributed systems and computer networks. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book.…
Seller Inventory # 9780243168453_0
- Title
- Optimization of Distributed Database Systems and Computer Networks
- Author
- Jacob Akoka, Peter P. S. Chen
- Publisher
- Forgotten Books
- Publication year
- 2018
- Condition
- New
- Book Type
- print-on-demand item
- Binding
- Paperback
- Language
- English
- ISBN 10
- 0243168454
- ISBN 13
- 9780243168453
- Seller catalogs
- General Administrative Records
In previous works, most of the research focused on the problem of minimizing the operating cost of a distributed database. A great deal of attention has been devoted to the problem of Optimal distribution of the files over a network of computer systems.
One of the earliest studies of the file allocation problem was' done by Chu He developed a linear-programming model allocating files so that the allocation yields minimum overall operating costs subject to the following constraints: (i) the expected time to access each file is less than a given bound, (ii) the amount of storage needed at each computer does not exceed the available storage capacity. His model includes storage costs, queuing delays, and communication costs. But he assumed that the number of copies of each -file in the system is known. In a later paper, Chu(10) developed a procedure to determine in advance how many redundant copies of a file are required to achieve a desired level of reliability. Then, he inserted this number into the model, and the basic scheme remains unchanged.
Whitney(24) also formulated a similar model. He applied it to the design of a network topology and to the allocation of file Copies. A communication network optimization procedure is developed. He showed that, for certain communication cost functions, the tree top -ology is less expensive than any non-tree topology. In addition, he showed that the system delay is minimized when there are as few independent channels as possible.
Casey (4) developed a procedure for finding a minimal cost solution. Heuristic methods are used in this paper to find good solutions. The main difference between his paper and Chu's paper (10)is that the number of copies of files and their locations are treated as variables. He showed that the proportions of update traffic to query traffic generated by the users of a given file in the network could be used to determine an upper bound on the number of copies of the file present in the least cost network. He applied his algorithm to real data for the arpa network and has thus shown the process feasible for networks of moderate size. He indicated that when update -traffic-equals query traffic, it is efficient to store all files at a central node.
About the Publisher
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This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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