Schemas
Like DTDs, but better:
- Functionality of DTDs
- XML syntax
- Inlude:
- Datatypes:
- More than 30 types instead of 10!)
- Can define the lexical representation (must be of form dd.ddd, say)
- Inheritance (can create your own datatypes)
- Schema combination rules
- Proper namespace support
- Richer content model
- Better hooks for documentation and semantics