• From: Michael Kay <mike@s...>
• To: Stephen Cameron <steve.cameron.62@g...>
• Date: Tue, 1 Oct 2013 14:30:43 +0100

On 1 Oct 2013, at 14:01, Stephen Cameron wrote:

> Hi Michael,
> 
> Not always, I agree that is why relational databases became so dominant, that you have the capability to answer any virtually any question via SQL. But in some cases I think that performance is the main issue (I am not an expert on this by any means),

I didn't say that designing performant databases isn't important. I said that that's not what data modelling is about. Data modelling is about understanding the problem. Once you understand it, that's the time to start designing a performant database: even if necessary cutting corners by simplifying the model.

Michael Kay
Saxonica

• References:
  • Re: XML Schema as a data modeling tool
    • From: Michael Kay <mike@s...>
  • Re: XML Schema as a data modeling tool
    • From: Damian Morris <damian@m...>
  • Re: XML Schema as a data modeling tool
    • From: Hans-Juergen Rennau <hrennau@y...>
  • Re: XML Schema as a data modeling tool
    • From: Michael Kay <mike@s...>
  • Re: XML Schema as a data modeling tool
    • From: Stephen Cameron <steve.cameron.62@g...>
  • Re: XML Schema as a data modeling tool
    • From: Michael Kay <mike@s...>