Database Design

External Article

Facts and Fallacies about First Normal Form

  • Article

When discussing the normalisation process, it is always the First Normal Form that causes the most grief and confusion. Anith Sen takes up the challenge to explain, in simple terms, exactly what the First Normal Form really is, and why it is so important for Database Design. Along the way, he dispels some of the myths that have grown up around 1NF.

2009-06-09

5,827 reads

Technical Article

Perils of adding fields to database tables

  • Article

Adding a field to a database table is sometimes not as simple as it may seem. If certain situations are not considered when adding fields, you may find yourself looking at some long nights fixing database code. Today, database consultant Tim Chapman looks at two such scenarios, and how you can plan for their occurrence.

2009-03-04

4,537 reads

External Article

Constraint Yourself!

  • Article

In his first article for Simple-Talk, Joe Celko demystifies the use of Constraints, and points out that they are an intrinsic part of SQL and are a great way of ensuring that a business rule is done one way, one place, one time.

2008-10-30

2,846 reads

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Why the following cmds in sequence do not work

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I need to delete rows from both the temporal main and history tables. The...

When SQL Server Central Went Down

By Steve Jones - SSC Editor

Comments posted to this topic are about the item When SQL Server Central Went...

The String Distance I

By Steve Jones - SSC Editor

Comments posted to this topic are about the item The String Distance I

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Question of the Day

The String Distance I

In SQL Server 2025, what is returned by this code:

SELECT EDIT_DISTANCE('tim', 'tom')
Assume preview features are enabled.

See possible answers