The W3C is The World Wide Web Consortium, a
voluntary association of companies and non-profit organisations. Membership
costs serious money, confers voting rights.Complex procedures, with the Chairman (Tim Berners-Lee)
holding all the high cards, but the big vendors (e.g. Microsoft, Adobe,
Netscape) have a lot of power.
Should we make it easy to construct type
definitions which restrict or extend other type definitions, by specifying
only the method of derivation and the differences between the source and
derived type definitions?
The new proposal says 'yes', you do this by
using the "source" and "derivedBy" attributes on your <type>
or <datatype> element.
The healthyBodytemp type definition is defined
by closing down the permitted range of bodytemp.We say it 'inherits' the other facets of bodytemp, so the
'effective type definition' of healthyBodytempis
Just as in the <datatype> case, the
content model aspects not mentioned are left alone, including the "maxOccurs='*'"
on <forename> and the whole particle for <surname>, so the
'effective content model'of