SQL and Relational Theory, 3e (Paperback)

C.j Date

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Lingua: inglese

Editore: O'Reilly Media, Sebastopol, 2015

1491941170 / 9781491941171

Da: Grand Eagle Retail, Bensenville, IL, U.S.A.Grand Eagle Retail

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Venditore AbeBooks dal 12 ottobre 2005

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Paperback. SQL is full of difficulties and traps for the unwary. You can avoid them if you understand relational theory, but only if you know how to put that theory into practice. In this book, Chris Date explains relational theory in depth, and demonstrates through numerous examples and exercises how you can apply it to your use of SQL. This third edition has been revised, extended, and improved throughout. Topics whose treatment has been expanded include data types and domains, table comparisons, image relations, aggregate operators and summarization, view updating, and subqueries. A special feature of this edition is a new appendix on NoSQL and relational theory. Could you write an SQL query to find employees who have worked at least once in every programming department in the company? And be sure it's correct? Why is proper column naming so important? Nulls in the database cause wrong answers. Why? What you can do about it? How can image relations help you formulate complex SQL queries? SQL supports "quantified comparisons," but they're better avoided. Why? And how? Database theory and practice have evolved considerably since Codd first defined the relational model, back in 1969.This book draws on decades of experience to present the most up to date treatment of the material available anywhere. Anyone with a modest to advanced background in SQL can benefit from the insights it contains. The book is product independent. SQL is full of difficulties and traps for the unwary. You can avoid them if you understand relational theory, but only if you know how to put that theory into practice. In this book, Chris Date explains relational theory in depth, and demonstrates through numerous examples and exercises how you can apply it to your use of SQL. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

Codice articolo 9781491941171

Titolo
SQL and Relational Theory, 3e (Paperback)
Autore
C.j Date
Editore
O'Reilly Media, Sebastopol
Anno di pubblicazione
2015
Condizione
new
Rilegatura
Paperback
Lingua
inglese
ISBN 10
1491941170
ISBN 13
9781491941171
Edizione
terza edizione

Grand Eagle Retail

Bensenville, IL, U.S.A.

Venditore con 5 stelle

Venditore AbeBooks dal 12 ottobre 2005

Tariffe di spedizione nazionale per U.S.A.

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