Books about Materialized from Amazon.com

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When an application is built, an underlying data model is chosen to make that application effective. Frequently, other applications need the same data, only modeled differently. The naïve solution of copying the underlying data and modeling is costly in terms of storage and makes data maintenance and evolution impossible. View mechanisms are a technique to model data differently for various applications without affecting the underlying format and structure of the data. The technique enables applications to customize shared data objects without affecting other applications that use the same objects. The growing data-manipulation needs of companies cannot be met by existing legacy systems that contain valuable data. Thus view mechanisms are becoming increasingly important as a way to model and use legacy data in new applications.

Materialized views are views that have been computed and stored in databases. Because they reduce the need to recompute the view and/or data being queried, they speed up the querying of large amounts of data. Further, because they provide a systematic way to describe how to recompute the data, maintenance and evolution can be automated. Materialized views are especially useful in data warehousing, query optimization, integrity constraint maintenance, online analytical processing, and applications such as billing, banking, and retailing. This comprehensive volume, with a foreword by Jeff Ullman of Stanford University, will serve as a reference for students and commercial users, and encourage further use and development of materialized views..
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This digital document is an article from Tea & Coffee Trade Journal, published by Lockwood Trade Journal Co., Inc. on October 1, 1994. The length of the article is 413 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: Coffee price hikes have not materialized in Germany. (due to Brazilian frost)
Author: Manik Mehta
Publication:Tea & Coffee Trade Journal (Magazine/Journal)
Date: October 1, 1994
Publisher: Lockwood Trade Journal Co., Inc.
Volume: v166 Issue: n10 Page: p6(2)

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Price: $5.95 [Notify me when price goes down.]

This digital document is an article from Fleet Equipment, published by Maple Communications on March 1, 2005. The length of the article is 3982 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: No real problems--none expected: when EGR engines were introduced in 2002, problems were anticipated, but few materialized. So what can we expect of engines to be introduced in 2007?(Equipment Technology)
Author: Carol Birkland
Publication:Fleet Equipment (Magazine/Journal)
Date: March 1, 2005
Publisher: Maple Communications
Volume: 31 Issue: 3 Page: 28(6)

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This digital document is a journal article from Decision Support Systems, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
In the data warehouse environment, the concept of a materialized view is common and important for efficient support of OLAP query processing. Materialized views are generally derived from several relations. These materialized views need to be updated when source relations change. Since the propagation of updates to the views may impose a significant overhead, it is essential to update the warehouse views efficiently. Though various view maintenance strategies have been discussed in the past, optimizations on the total accesses to relations have not been sufficiently investigated. In this paper we propose an efficient incremental view maintenance method called optimal delta evaluation that can minimize the total accesses to relations. We first present the delta evaluation expression and a delta evaluation tree which are core concepts of the method. Then, a dynamic programming algorithm that can find the optimal delta evaluation tree is proposed. We also present various experimental results that show the usefulness and efficiency of our proposed method. .
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This digital document is a journal article from Information Systems, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
Materialized views defined over distributed data sources can be utilized by many applications to ensure better access, reliable performance, and high availability. Technology for maintaining materialized views is thus critical for providing up-to-date results since a stale view extent may not help or even mislead these applications. State-of-the-art incremental view maintenance requires O(n^2) or more remote maintenance queries with n being the number of data sources in the view definition. In this work, we propose two novel maintenance strategies, namely adjacent grouping and conditional grouping, that dramatically reduce the number of maintenance queries required to maintain the materialized views. This reduction in the number of maintenance queries brings the basic trade-off between the complexity of each query and the total number of maintenance queries that can be exploited to improve maintenance performance. The proposed maintenance strategies have been implemented in a working prototype system called TxnWrap. Experimental studies illustrate that our proposed strategies are able to achieve about 400% performance improvement in terms of total processing time compared with existing batch algorithms in a majority of cases. .
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This digital document is an article from The Register-Guard (Eugene, OR), published by The Register Guard on April 8, 2003. The length of the article is 509 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: The dogs that didn't bark.(Editorials)(Some worst fears of war haven't materialized)(Editorial)
Publication:The Register-Guard (Eugene, OR) (Newspaper)
Date: April 8, 2003
Publisher: The Register Guard
Page: A12

Article Type: Editorial

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