XML Schema Reference Manual

XSD Elements

Element	Description
all	Specifies that the child elements can appear in any order, and each child element can occur zero or one time.
annotation	The annotation element is a top-level element that specifies comments for the schema.
any	Allows authors to extend the XML document with elements not specified by the schema.
anyAttribute	Allows authors to extend the XML document with attributes not specified by the schema.
appInfo	Specifies information to be used by applications in the annotation element.
attribute	Defines an attribute.
attributeGroup	Defines a group of attributes to be used in complex type definitions.
choice	Allows only one of the elements contained in the <choice> declaration to appear in the parent element.
complexContent	Defines extensions or restrictions on a complex type that contains mixed content or elements only.
complexType	Defines a complex type.
documentation	Defines text comments within the schema.
element	Defines an element.
extension	Extends an existing simpleType or complexType element.
field	Specifies an XPath expression that specifies the value used to define an identity constraint.
group	Defines a group of elements to be used in complex type definitions.
import	Adds multiple schemas with different target namespaces to a document.
include	Adds multiple schemas with the same target namespace to a document.
key	Specifies that an attribute or element value (or a set of values) must be a key within the specified scope.
keyref	Specifies that an attribute or element value (or a set of values) must correspond to the value of the specified key or unique element.
list	Defines a simple type as a list of values of a specified data type.
notation	Describes the format of non-XML data within an XML document.
redefine	Redefines simple and complex types, groups, and attribute groups from an external schema file.
restriction	Defines constraints on a simpleType, simpleContent, or complexContent.
schema	Defines the root element of the schema.
selector	Specifies an XPath expression that selects a set of elements for an identity constraint.
sequence	Requires child elements to appear in a specified order. Each child element can occur from 0 to any number of times.
simpleContent	Contains extensions or restrictions on a complexType element that does not contain any elements.
simpleType	Defines a simple type, specifying constraints and information about the values of attributes or text-only elements.
union	Defines a collection of simpleType definitions.
unique	Specifies that an attribute or element value (or a combination of attribute or element values) must be unique within the specified scope.

XSD Constraints/Facets

See XSD Constraints / Facets

Constraint	Description
enumeration	Defines a list of acceptable values
fractionDigits	Defines the maximum number of decimal places allowed. Must be greater than or equal to 0.
length	Defines the exact number of characters or list items allowed. Must be greater than or equal to 0.
maxExclusive	Defines the upper bounds for numeric values. The value must be less than this value.
maxInclusive	Defines the upper bounds for numeric values. The value must be less than or equal to this value.
maxLength	Defines the maximum number of characters or list items allowed. Must be greater than or equal to 0.
minExclusive	Defines the lower bounds for numeric values. The value must be greater than this value.
minInclusive	Defines the lower bounds for numeric values. The value must be greater than or equal to this value.
minLength	Defines the minimum number of characters or list items allowed. Must be greater than or equal to 0.
pattern	Defines the exact sequence of characters that are acceptable.
totalDigits	Defines the exact number of digits allowed. Must be greater than 0.
whiteSpace	Defines how white space (line feeds, tabs, spaces, and carriage returns) is handled.

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