SQL and Relational Theory: How to Write Accurate SQL Code - Couverture souple

Date, Chris J

 
9781491941171: SQL and Relational Theory: How to Write Accurate SQL Code
Couverture souple
ISBN 10 : 1491941170 ISBN 13 : 9781491941171
Editeur : O'Reilly Media, 2015

Synopsis

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.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

À propos de l?auteur

C.J. Date has a stature that is unique within the database industry. C.J. is a prolific writer, and is well-known for his best-selling textbook: An Introduction to Database Systems (Addison Wesley). C.J. is an exceptionally clear-thinking writer who can lay out principles and theory in a way easily understood by his audience.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
O'Reilly Media
Date d'édition
2015
Langue
anglais
ISBN 10 
1491941170
ISBN 13 
9781491941171
Reliure
Broché
Numéro d'édition
3
Nombre de pages
581
Coordonnées du fabricant
O'Reilly
https://oreilly.com

1005 Gravenstein Highway North
Sebastopol
CA
95472
Etats-Unis
Personne responsable
non disponible

Autres éditions populaires du même titre

9789352132652: SQL & RELATION THEORY,3/ED HOW TO WRITE ACCURATE SQL CODE

Edition présentée

ISBN 10 :  9352132653 ISBN 13 :  9789352132652
Couverture souple