Excerpt from Microsoft SQL Server 2008 R2 Unleashed. By Ray Rankins, Paul Bertucci, Chris Gallelli, and Alex T. Silverstein Published by Sams ISBN-10: 0-672-33056-3 ISBN-13: 978-0-672-33056-8 ...

Sample Database Diagram - SQL Server 7.0 Here is a sample E-commerce application database structure. For a relational database to work properly you should have a field in each database that uniquely ...

SQL databases have constraints on data types and consistency. NoSQL does away with them for the sake of speed, flexibility, and scale.