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Titlebook: Database Design and Relational Theory; Normal Forms and All C. J. Date Book 2019Latest edition C. J. Date 2019 Database Design.Functional D

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發(fā)表于 2025-3-21 18:44:34 | 只看該作者 |倒序?yàn)g覽 |閱讀模式
書(shū)目名稱Database Design and Relational Theory
副標(biāo)題Normal Forms and All
編輯C. J. Date
視頻videohttp://file.papertrans.cn/264/263353/263353.mp4
概述Covers all normal forms in depth up to the sixth normal form.Describes aspects of design theory such as dependency preservation and orthogonality.Provides friendly examples of theory without sacrifici
圖書(shū)封面Titlebook: Database Design and Relational Theory; Normal Forms and All C. J. Date Book 2019Latest edition C. J. Date 2019 Database Design.Functional D
描述Create database designs that scale, meet business requirements, and inherently work toward keeping your data structured and usable in the face of changing business models and software systems..This book is about database design theory. Design theory is the scientific foundation for database design, just as the relational model is the scientific foundation for database technology in general. Databases lie at the heart of so much of what we do in the computing world that negative impacts of poor design can be extraordinarily widespread.?.This second edition includes greatly expanded coverage of exotic and little understood normal forms such as: essential tuple normal form (ETNF), redundancy free normal form (RFNF), superkey normal form (SKNF), sixth normal form (6NF), and domain key normal form (DKNF). Also included are new appendixes, including one that provides an in-depth look into the crucial notion of data consistency.Sequencing of topics has been improved, and many explanations and examples have been rewritten and clarified based upon the author’s teaching of the content in instructor-led courses.?.This book aims to be different from other books on design by bridging the gap be
出版日期Book 2019Latest edition
關(guān)鍵詞Database Design; Functional Dependence; Multivalued Dependence; Join Dependence; Boyce-Codd Normal Form
版次2
doihttps://doi.org/10.1007/978-1-4842-5540-7
isbn_softcover978-1-4842-5539-1
isbn_ebook978-1-4842-5540-7
copyrightC. J. Date 2019
The information of publication is updating

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Preserving FDs {SNO}, . as {STATUS}, and . as {SNAME,CITY}, Heath’s Theorem tells us we can decompose that relvar into relvars SNC and ST, where SNC has heading {SNO,SNAME,CITY} and ST has heading {SNO,STATUS}. Sample values for SNC and ST corresponding to the value shown for S in Figure 3-1 are shown in Figure 6-1:
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Thinking About Justice and Interpreting the s for the small amount of repetition involved). As you’ll quickly see, the treatment in this chapter is rather more abstract than that in the previous one; it shouldn’t be too difficult to follow, if you’re fully comfortable with the material of that previous chapter, but it’ll certainly be more for
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https://doi.org/10.1007/978-981-99-5471-1 {SNO}, . as {STATUS}, and . as {SNAME,CITY}, Heath’s Theorem tells us we can decompose that relvar into relvars SNC and ST, where SNC has heading {SNO,SNAME,CITY} and ST has heading {SNO,STATUS}. Sample values for SNC and ST corresponding to the value shown for S in Figure 3-1 are shown in Figure 6
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Social Organizations and Governments); as noted in Chapter ., in fact, 5NF is . normal form with respect to JDs, just as BCNF is . normal form with respect to FDs. And the treatment of these ideas in this part of the book therefore parallels the treatment of BCNF and FDs in Part II. In other words, I plan to treat the material both f
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