SQL and Relational Theory: How to Write Accurate SQL Code

2 edition 2011 | 446 Pages | ISBN: 1449316409 |  PDF | 20.25 MB

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 the theory into practice. In this insightful book, author C.J. Date explains relational theory in depth, and demonstrates through numerous examples and exercises how you can apply it directly to your use of SQL.
This second edition includes new material on recursive queries, ¡°missing information¡± without nulls, new update operators, and topics such as aggregate operators, grouping and ungrouping, and view updating. If you have a modest-to-advanced background in SQL, you¡¯ll learn how to deal with a host of common SQL dilemmas.
Why is proper column naming so important?
Nulls in your database are causing you to get wrong answers. Why? What can you do about it?
Is it possible to write an SQL query to find employees who have never been in the same department for more than six months at a time?
SQL supports ¡°quantified comparisons,¡± but they¡¯re better avoided. Why? How do you avoid them?
Constraints are crucially important, but most SQL products don¡¯t support them properly. What can you do to resolve this situation?
Database theory and practice have evolved since the relational model was developed more than 40 years ago. SQL and Relational Theory draws on decades of research to present the most up-to-date treatment of SQL available.




[Fast Download] SQL and Relational Theory: How to Write Accurate SQL Code

Ebooks related to "SQL and Relational Theory: How to Write Accurate SQL Code" :
Learning SAP BusinessObjects Dashboards
Hadoop: The Definitive Guide (4th edition)
Microsoft SQL Server 2008 Reporting Services Unleashed
PowerCLI Cookbook
Inside Relational Databases with Examples in Access by Mark Whitehorn
Databases with Access: Learning Made Simple
Database Design
Big Data Glossary
Graph Databases
Joe Celko's SQL for Smarties: Advanced SQL Programming Third Edition
Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.