【预订】Viewing Self-Concept Related to Outstanding Creativity a
美国库房发货,通常付款后3-5周到货!
/ 2014-05-07
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¥929.00
【预订】Database Integrity: Challenges and Solutions 97819307083
国外库房发货,通常付款后3-5周到货!
/ 2001-07-01
Product Details 基本信息 ISBN-13 书号 9781930708389 Author 作者 Jorge Horacio Doorn Format 版本 精装 Pages Number 页数 300页 Publisher 出版社 Idea Group Publishing Publication Date 出版日期 2001-07-01 Product Dimensions 商品尺寸 Language 语种 其它(含多语) Book Contents 内容简介 One of the driving forces that stimulated the emergence of database technology was the need to guarantee the quality of the data stored. The software design is impacted by the properties of the data. Data properties should be seen from a point of view as independently as possible from the representation model. In the database world, quality of data means that all those properties are adequately represented and preserved. Efficient maintenance of data integrity has become a critical problem since testing the validity of a large number of constraints in a large database, after each transaction is an expensive task.
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