UTYPES

UTYPE describes a data model field or attribute

Most needed for VOTABLE, to map table structure to DM structure

Not explicit in schema-based XML

Generally useful for uniquely describing parts of a DM

What is the syntax of a UTYPE?

UTYPE syntax

Hierarchical semantics

Previous discussion suggested we should use XPATH syntax

sed:Segment/Frame/Time/Type

Oops – in the SED DM I have been using

sed:Segment.Frame.Time.Type

We should have a short formal document defining the syntax

2005-05-10T09:47:56