Sybase XML manual 268

XML Model Glossary

extension	Derivation of a complex type to extend the values of its base type
facet	A constraint on the set of values of a simple type
field	An XPath expression that specifies the value (or one of the values) used to
	define an identity constraint (unique, key or keyRef)
global object	A global object has a global scope. It has no parent object and can be reused
	locally in the model through referenced objects. In a schema, it is directly
	linked to the <schema> root element
group	A set of elements arranged by a group particle (all, choice or sequence)
group particle	An indication (all, choice, sequence) on how child elements are related with
	their parent element
ID	Identifier (key word) for a model object. It must be unique within the model.
	To be XML-valid, it must start by an underscore or a letter, followed by
	alphanumeric characters
identity constraint	An indication to specify that element or attribute values must be unique
	within their specified scopes
import	Identifies a namespace whose schema components are referenced by the
	current schema
include	Allows you to include a specified schema file in the target namespace of the
	current schema
key	An identity constraint to specify that an element or attribute value (or set of
	values) must be a key within a specified scope. A key means that data should
	be unique, not null and always present within a specified scope
keyRef	An identity constraint to specify that an element or attribute value (or set of
	values) corresponds to those of a specified key or unique constraint
list	Derivation of a simple type to restrict its values to a list of values of a
	specified data type
local object	A local object has a local scope, within a parent object. It cannot be reused
	elsewhere in the model
namespace	Original location for the definition of an object. It should be a URI
no-colon name	A name without a colon (:), beginning with a letter or an underscore
(NCName)	character, and followed by any combination of characters
notation	Allows you to describe the format of non-XML data within an XML model

268 PowerDesigner