<!ENTITY % numeric "precision | scale">
<!ENTITY % bounds "((minInclusive | minExclusive)?, 
  (maxInclusive | maxExclusive)?)">
<!ENTITY % ordered "%bounds; | %numeric;">
<!ENTITY % unordered "lexicalRepresentation | enumeration 
  | length | maxLength">

<!ELEMENT datatype (basetype, (%ordered; | %unordered;)*)>
<!ATTLIST datatype
	name NMTOKEN #REQUIRED
	export (true|false) "true">

<!ELEMENT basetype EMPTY>
<!ATTLIST basetype
   name NMTOKEN #REQUIRED
   schemaAbbrev NMTOKEN #IMPLIED
   schemaName CDATA #IMPLIED>

<!ELEMENT maxExclusive (#PCDATA)>
<!ELEMENT minExclusive (#PCDATA)>
<!ELEMENT maxInclusive (#PCDATA)>
<!ELEMENT minInclusive (#PCDATA)>

<!ELEMENT precision (#PCDATA)>
<!ELEMENT scale (#PCDATA)>

<!ELEMENT length (#PCDATA)>
<!ELEMENT maxLength (#PCDATA)>
<!ELEMENT enumeration (literal)+>
<!ELEMENT literal (#PCDATA)>
<!ELEMENT lexicalRepresentation (lexical)+>
<!ELEMENT lexical (#PCDATA)>