• This is another old idea (standard DTDs)
• Now namespaces (vocabularies) need to be standardized, too
• Big question: are these standards controlled by user communities or by platform vendors?
• Need distributed registries beyond platform vendor control
  • Vertical industry consortia
  • Entrepreneurs
  • Neutral third parties (e.g., OASIS)

XML & JAVA:   PORTABLE DATA — PORTABLE PROGRAMS