RE: W3C's five new XQuery/Xpath2 working drafts - Still missi
> -----Original Message----- > From: Jonathan Robie [mailto:jonathan.robie@s...] > Sent: Sunday, December 30, 2001 7:40 PM > To: Paul T; Champion, Mike; xml-dev@l... > Subject: Re: W3C's five new XQuery/Xpath2 working drafts - > Still missing Updates > > >Bringing types to XML, ( based on 'it looks like' ) would bring > >plenty of madness. > > "it looks like" is precisely what I consider error prone. The > cure for "it looks like" is to record what "it is" in the schema. And > that's why we need types. As my Two Poles post hopefully makes clear, I think you two are talking past each other. Jonathan has quite persuasively argued that there are good technical advantages to be gained from designing strongly typed XML applications. I think Paul is implying that these technical advantages require a business environment that is not typical of the world most of us live in. Some subset of us lives in an engineering-centric world where strongly typed applications and schemas are designed by competent people, they run on compatible systems, and business processes to cope with validation failure and schema evolution are put in place. Some other subset of us lives in a world where business processes are sales/marketing/administration-centric, there's lots of incompatibility among the systems the apps must run on, and engineers have to cope as best they can without EVER telling a customer "you need to send a schema-valid purchase order before we'll take your money". Most of us probably muddle along in an environment where everyone tries to do the right thing, but there's usually a big gap between what is technically desirable and what is economically or bureaucratically possible. Perhaps we could move forward on the "types vs. update" debate by asking what percentage of likely XQuery users could use a) strong typing features and b) INSERT/UPDATE/DELETE features in real applications in the next two years.
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