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Titlebook: Beginning Database Design; From Novice to Profe Clare Churcher Book 2012Latest edition Clare Churcher 2012

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發(fā)表于 2025-3-21 19:23:31 | 只看該作者 |倒序?yàn)g覽 |閱讀模式
期刊全稱Beginning Database Design
期刊簡(jiǎn)稱From Novice to Profe
影響因子2023Clare Churcher
視頻videohttp://file.papertrans.cn/183/182300/182300.mp4
發(fā)行地址Beginning Database Design, Second Edition helps you ask and answer important questions about your data so that you can avoid pitfalls and get database design right the first time.
圖書(shū)封面Titlebook: Beginning Database Design; From Novice to Profe Clare Churcher Book 2012Latest edition Clare Churcher 2012
影響因子.Beginning Database Design, Second Edition. provides short, easy-to-read explanations of how to get database design right the first time. This book offers numerous examples to help you avoid the many pitfalls that entrap new and not-so-new database designers. Through the help of use cases and class diagrams modeled in the UML, you’ll learn to discover and represent the details and scope of any design problem you choose to attack..Database design is not an exact science. Many are surprised to find that problems with their databases are caused by poor design rather than by difficulties in using the database management software. .Beginning Database Design, Second Edition. helps you ask and answer important questions about your data so you can understand the problem you are trying to solve and create a pragmatic design capturing the essentials while leaving the door open for refinements and extension at a later stage. Solid database design principles and examples help demonstrate the consequences of simplifications and pragmatic decisions. The rationale is to try to keep a design simple, but allow room for development as situations change or resources permit..Provides solid design prin
Pindex Book 2012Latest edition
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simplifications and pragmatic decisions. The rationale is to try to keep a design simple, but allow room for development as situations change or resources permit..Provides solid design prin978-1-4302-4209-3978-1-4302-4210-9
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Initial Requirements and Use Cases,o make sure we really understand the problem. This may sound obvious, but it is surprising how often people set about implementing a database before they understand the problem completely. There are two things we need to do: understand what tasks need to be carried out by all the people who will use
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Learning from the Data Model,first attempt at determining the data that are necessary to support those tasks and formed an initial data model, which we depicted with a class diagram. In this chapter, we look more closely at the data model to see how it can further our understanding of a database system.
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Generalization and Specialization,might like. We might find that we have some objects for which some of the attributes do not really apply. For example, if we have a class to record information about all the people associated with a company, we might find that some have hourly pay rates while others have annual salaries. In many res
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