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Re: Objections to / uses of PSVI?

• To: Ronald Bourret <rpbourret@r...>
• Subject: Re: Objections to / uses of PSVI?
• From: "J.Pietschmann" <j3322ptm@y...>
• Date: Fri, 17 May 2002 01:03:11 +0200
• Cc: xml-dev <xml-dev@l...>
• References: <3CE193C0.7290457C@r...> <1021421496.2161.6048.camel@l...> <3CE23E39.8E3381F3@r...>
• User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0rc1) Gecko/20020417

Ronald Bourret wrote:
 > I think where the XML Schemas data types have missed the boat is in
 > their degree of complexity, as Amy Lewis points out. If you want
 > interoperability, you can't go much beyond saying that a number is an
 > integer. It is the up to the recipient of the document to decide (a)
 > whether they can represent that number in whatever language / system
 > they are using and (b) what data type they choose to represent it in.
 >
 > (Note that range restrictions -- e.g. I only sell quantities between 1
 > and 10 -- are separate from type. This is most evident when you think
 > about how little data has a real world range of, say, -32768 to 32767,
 > and shows the artificiality of data types like short, int, and double in
 > markup.)

While I don't like XSchema particularly well, this argument
is a bit flawed. XSchema is, among other things,  supposed
to play a major role in XML-DBs and mappings of XML to/from
other DBs. To the DB people, differences between short, int
and wider types sometimes matter, not because of storage but
because of I/O and disk R/W capacity. There are life databases
where this makes a significant difference in performance.

Whether it was really a good idea to force this on unsuspecting
users who wouldn't even think of touching a DB is another
matter.

J.Pietschmann

• Follow-Ups:
  • Re: Objections to / uses of PSVI?
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  • Objections to / uses of PSVI?
    • From: Ronald Bourret <rpbourret@r...>
  • Re: Objections to / uses of PSVI?
    • From: "Simon St.Laurent" <simonstl@s...>
  • Re: Objections to / uses of PSVI?
    • From: Ronald Bourret <rpbourret@r...>

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