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ian

Member since Dec 11, 2008

Recent Blog Comments By ian

  • Why NULL Values Should Not Be Used in a Database Unless Required

    Posted on Aug 2, 2007 at 7:13 PM

    Well, I mostly agree with your last assesment - that if it is a question of no nulls or no empties, nulls are way better than empties. But I still stand by the difference between known versus empty. It is true that when we see a null we don't know whether ther is or is not a real value lurking out ... read more »

  • Why NULL Values Should Not Be Used in a Database Unless Required

    Posted on Jul 25, 2007 at 4:14 PM

    I think null is very valuable in a lot of cases where you want to know if something is unknwon (i.e. data was not collected) or if it is really empty. For instance, suppose we have a contact form with firstname, lastname and emailaddress. We use it for a year, then the boss asks us to add middlename... read more »

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