0 thoughts on “Validation considered harmful

  1. Alex James

    I was listening a podcast a couple of days ago with Martin Fowler talking to Ron Jacobs I think, and Martin started talking about how XSD’s etc are too brittle.

    He described the way in which clients typically only consume certain bits of a document -> maybe 3 xpaths, all the client asks of the server is that it continues to provide this data in the same place, not that it keeps the whole document XSD compliant.

    If we could evolve systems that support this sort of model then the server implementation is free to change/innovate over time as you describe… it makes sense to me.

  2. Mark Baker

    Nice find, thanks Alex. The podcast you’re referring to seems to be this one.

    And kudos to Channel 9 for the transcript which includes a bunch of comments from Martin Fowler and Ian Robinson which are on point.

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