logical data type

Dear XML Schema editor,

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.

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


Mike McCaleb

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