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Davide Mauri

A place for my thoughts and experiences the Microsoft Data Platform

Five Simple Database Design You Should Avoid

On Simple-Talk there’s a really good article on five database design flaw that are commonly found in solutions and that should be avoided. The article is a must-read:

The sentences I like the most are the following:

“Rely on nothing else to provide completeness and correctness except the database itself. By nothing, I mean neither users nor applications external to the database. While it may be true that current DBMS products may not succeed in enforcing all possible constraints, it is not sensible to let the application or user take over that responsibility.

You may ask why it is bad to rely on the application to enforce data-integrity? Well, if there is only one application per database, then it is not really an issue. But usually, databases act as the central repositories of data and serve several applications. Therefore,  rules must be enforced across all these applications. These rules may change as well.”

This is something I keep telling to developer from years (ages?). The more we are to say it, the more probable will be that developers will start to see it right.

Thanks to Davide Senatore for helping me to discover this article.

Published Saturday, October 24, 2009 10:41 AM by Davide Mauri
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About Davide Mauri

Davide Mauri - MCP, MCAD, MCDBA, MCT, MVP on SQL Server - has worked with SQL Server since version 6.5, and his interests cover the whole platform, from the Relational Engine to Analysis Services, from architecture definition to performance tuning. He also has a strong knowledge of XML, .NET and the Object Oriented Design principles, which allows him to have the correct vision and experience to handle development of complex business intelligence solutions. Having worked as a Microsoft Certified Teacher for many years, Davide is able to pass all his knowledge to his co-workers, allowing his team to deliver high-quality solutions. He currently works as a Mentor for SolidQ and can be found speaking in many Italian and internationals events.

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