logical data type

• From: Michael McCaleb <mccaleb@eeel.nist.gov>
• Date: Fri, 15 Dec 2000 17:02:50 -0500
• To: www-xml-schema-comments@w3.org
• Message-Id: <v02130502b660456e8990@[129.6.185.17]>

Dear XML Schema editor,

Observation:
In doing a comparison between the EXPRESS data modeling language (ISO
10303-11) and XML Schema, I noticed that EXPRESS has a built in simple type
called "logical data type" that has three possible values: true, false, and
unknown. Note: EXPRESS also has a "boolean data type" that has only true
and false as possible values.

Question:
Is there a need in XML Schema for a predefined type similar to the EXPRESS
"logical data type"?


Sincerely,

Mike McCaleb

Received on Friday, 15 December 2000 17:01:33 UTC