The following XML schemas are applied to UML elements for a variety of purposes:Defined stereotypes Attribute Element ComplexType AttributeGroup SimpleType Restriction List Union MinExclusive MaxExclusive MinInclusive MaxInclusive TotalDigits FractionDigits Length MinLength MaxLength WhiteSpace Pattern Enumeration Unique Key Keyref Selector and field Annotation Compositors Group Any and anyAttribute Schema Notation Redefine Import Include XML schema namespaces