Reuters
Henry S. Thompson
XML Schema, London 1999-12-15
62
Mapping between layers 3
nRegardless of what approach we take, we need
äA vocabulary of data model components
äAn attachment of that vocabulary to schema components
nSample vocabularies
äentity, relationship, collection
ätable, row, column
äinstance, variable, list, dictionary
nWhere should attachment be specified?
äIn the schema
–convenient
äOutside it
–modular