• To: <bill.dehora@p...>,"'Bullard, Claude L \(Len\)'" <clbullar@i...>,"'Dare Obasanjo'" <dareo@m...>,<xml-dev@l...>
• Subject: RE: Fwd: War of Attrition (was: Underwhelmed (WAS: XOM micro tutorial))
• From: Jonathan Robie <jonathan.robie@d...>
• Date: Thu, 26 Sep 2002 10:10:30 -0400
• In-reply-to: <003001c2653f$c37a4370$1fc8c8c8@mitchum>
• References: <5.1.0.14.0.20020925145842.054a01f0@n...>

At 10:32 AM 9/26/2002 +0100, Bill de hÓra wrote:

>It looked highly procedural to me, given those conditional blocks and
>assignments. Is there a Prolog or XSLT flavoured variant? That would be
>declarative.

I think what you mean is that when you see a FLWR expression you think of 
it as a loop. It is probably better to think of it as a lot like 
SELECT-FROM-WHERE. The syntax for a FLWR expression *does* look procedural 
(which makes it easier to explain to users), and naive implementations may 
take a procedural approach, but more sophisticated applications are taking 
an algebraic approach to optimization, along the lines of what is 
traditionally used in query languages.

Jonathan

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    • From: Jonathan Robie <jonathan.robie@d...>
  • RE: Fwd: War of Attrition (was: Underwhelmed (WAS: XOM micro tutorial))
    • From: Bill de hÓra <bill.dehora@p...>

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