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Refactoring RDBMS: Adding a new column
So, the requirements change and you now need to record a new piece of information in one of your tables. That’s a pretty easy one, right? Just add a column and you’re laughing. Well this is probably...
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Who hard-coded the VAT?
With the recent change in UK VAT rates there has been an intriguing chance to see which retailers have a decent data model and those who just assumed that VAT would never change. If you look at your...
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Data Modelling with Representations
One of my colleagues at ThoughtWorks, Ian Robinson, is doing something really interesting with business and data modelling. His ideas are making me think again about some of my views on data...
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Names are like genders
One thing I slightly regret in the data modelling that is done for users in Wazoku is that I bowed to marketing pressure and “conventional wisdom” and created a pair of first and last name fields. If...
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