This document contains XML elements which look like definitions for the primitive datatypes. These definitions are for information only; the real built-in definitions are magic. For each built-in datatype in this schema (both primitive and derived) can be uniquely addressed via a URI constructed as follows: 1) the base URI is the URI of the XML Schema namespace 2) the fragment identifier is the name of the datatype For example, to address the int datatype, the URI is: http://www.w3.org/2001/XMLSchema#int Additionally, each facet definition element can be uniquely addressed via a URI constructed as follows: 1) the base URI is the URI of the XML Schema namespace 2) the fragment identifier is the name of the facet For example, to address the maxInclusive facet, the URI is: http://www.w3.org/2001/XMLSchema#maxInclusive Additionally, each facet usage in a built-in datatype definition can be uniquely addressed via a URI constructed as follows: 1) the base URI is the URI of the XML Schema namespace 2) the fragment identifier is the name of the datatype, followed by a period (".") followed by the name of the facet For example, to address the usage of the maxInclusive facet in the definition of int, the URI is: http://www.w3.org/2001/XMLSchema#int.maxInclusive Built-in primitive type. The string datatype represents character strings in XML. Built-in primitive type. It defines the boolean values true and false. Built-in primitive type. Corresponds to the IEEE single-precision 32-bit floating point type [IEEE 754-1985]. Built-in primitive type. The double datatype corresponds to IEEE double-precision 64-bit floating point type [IEEE 754-1985]. Built-in primitive type. The decimal datatype represents arbitrary precision decimal numbers. Built-in primitive type. The duration datatype represents a duration of time. Built-in primitive type. The dateTime datatype represents a specific instant of time. Built-in primitive type. The time datatype represents an instant of time that recurs every day. Built-in primitive type. The date datatype represents a calendar date. Built-in primitive type. The gYearMonth datatype represents a specific gregorian month in a specific gregorian year. Built-in primitive type. The gYear datatype represents a gregorian calendar year. Built-in primitive type. The gMonthDay datatype is a gregorian date that recurs, specifically a day of the year such as the third of May.Arbitrary recurring dates are not supported by this datatype. Built-in primitive type. The gDay datatype is a gregorian day that recurs, specifically a day of the month such as the 5th of the month. Arbitrary recurring days are not supported by this datatype. Built-in primitive type. The gMonth datatype is a gregorian month that recurs every year. Built-in primitive type. The hexBinary datatype represents arbitrary hex-encoded binary data. Built-in primitive type. The base64Binary datatype represents Base64-encoded arbitrary binary data. Built-in primitive type. The anyURI datatype represents a Uniform Resource Identifier Reference (URI). Built-in primitive type. QName represents XML qualified names. NOTATION cannot be used directly in a schema; rather a type must be derived from it by specifying at least one enumeration facet whose value is the name of a NOTATION declared in the schema. This document contains XML representations for the ordinary non-primitive built-in datatypes Built-in derived type. The normalizedString datatype represents white space normalized strings. The base type of normalizedString is string. Built-in derived type. The token datatype represents tokenized strings. The base type of token is normalizedString. Built-in derived type. The language datatype represents natural language identifiers as defined by [RFC 1766]. The base type of language is token. pattern specifies the content of section 2.12 of XML 1.0e2 and RFC 3066 (Revised version of RFC 1766). N.B. RFC 3066 is now obsolete; the grammar of RFC4646 is more restrictive. So strict conformance to the rules for language codes requires extra checking beyond validation against this type. Built-in derived type. IDREFS represents the IDREFS attribute type. The itemType of IDREFS is IDREF. Built-in derived type. ENTITIES represents the ENTITIES attribute type. The itemType of ENTITIES is ENTITY. Built-in derived type. NMTOKEN represents the NMTOKEN attribute type. The base type of NMTOKEN is token. pattern matches production 7 from the XML spec Built-in derived type. NMTOKENS represents the NMTOKENS attribute type. The itemType of NMTOKENS is NMTOKEN. Built-in derived type. Name represents XML Names. The base type of Name is token. pattern matches production 5 from the XML spec Built-in derived type. NCName represents XML "non-colonized" Names. The base type of NCName is Name. pattern matches production 4 from the Namespaces in XML spec Built-in derived type. ID represents the ID attribute type. The base type of ID is NCName. Built-in derived type. IDREF represents the IDREF attribute type. The base type of IDREF is NCName. Built-in derived type. ENTITY represents the ENTITY attribute type. The base type of ENTITY is NCName. Built-in derived type. The integer datatype is derived from decimal by fixing the value of fractionDigits to be 0. This results in the standard mathematical concept of the integer numbers. Built-in derived type. The nonPositiveInteger datatype is derived from integer by setting the value of maxInclusive to be 0. This results in the standard mathematical concept of the non-positive integers. Built-in derived type. The negativeInteger datatype is derived from nonPositiveInteger by setting the value of maxInclusive to be -1. This results in the standard mathematical concept of the negative integers. Built-in derived type. The long datatype is derived from integer by setting the value of maxInclusive to be 9223372036854775807 and minInclusive to be -9223372036854775808. Built-in derived type. The int datatype is derived from long by setting the value of maxInclusive to be 2147483647 and minInclusive to be -2147483648. Built-in derived type. The short datatype is derived from int by setting the value of maxInclusive to be 32767 and minInclusive to be -32768. Built-in derived type. The byte datatype is derived from short by setting the value of maxInclusive to be 127 and minInclusive to be -128. Built-in derived type. The nonNegativeInteger datatype is derived from integer by setting the value of minInclusive to be 0. This results in the standard mathematical concept of the non-negative integers. Built-in derived type. The unsignedLong datatype is derived from nonNegativeInteger by setting the value of maxInclusive to be 18446744073709551615. Built-in derived type. The unsignedInt datatype is derived from unsignedLong by setting the value of maxInclusive to be 4294967295. Built-in derived type. The unsignedShort datatype is derived from unsignedInt by setting the value of maxInclusive to be 65535. Built-in derived type. The unsignedByte datatype is derived from unsignedShort by setting the value of maxInclusive to be 255. Built-in derived type. The positiveInteger datatype is derived from nonNegativeInteger by setting the value of minInclusive to be 1. This results in the standard mathematical concept of the positive integer numbers. This type includes just those durations expressed in years and months. Since the pattern given excludes days, hours, minutes, and seconds, the values of this type have a seconds property of zero. They are totally ordered. This type includes just those durations expressed in days, hours, minutes, and seconds. The pattern given excludes years and months, so the values of this type have a months property of zero. They are totally ordered. This datatype includes just those dateTime values Whose explicitTimezone is present. They are totally ordered. Part 1 version: structures.xsd (rec-20120405) Part 2 version: datatypes.xsd (rec-20120405) The schema corresponding to this document is normative, with respect to the syntactic constraints it expresses in the XML Schema Definition Language. The documentation (within 'documentation' elements) below, is not normative, but rather highlights important aspects of the W3C Recommendation of which this is a part. See below (at the bottom of this document) for information about the revision and namespace-versioning policy governing this schema document. The simpleType element and all of its members are defined towards the end of this schema document. Get access to the xml: attribute groups for xml:lang as declared on 'schema' and 'documentation' below This type is extended by almost all schema types to allow attributes from other namespaces to be added to user schemas. This type is extended by all types which allow annotation other than <schema> itself Specifies an ID. This group is for the elements which occur freely at the top level of schemas. All of their types are based on the "annotated" type by extension. This group is for the elements which can self-redefine (see <redefine> below). A utility type, not for public use A utility type, not for public use A utility type, not for public use #all or (possibly empty) subset of {extension, restriction} A utility type, not for public use A utility type, not for public use #all or (possibly empty) subset of {extension, restriction, list, union} Defines the root element of a schema. A schema consists of a set of schema components. A schema is represented in XML by one or more schema documents, that is, one or more <schema> element information items. A schema document contains representations for a collection of schema components, e.g. type definitions and element declarations, which have a common target namespace.
See more info at http://www.w3.org/TR/xmlschema-1/#element-schema Most components corresponding to representations within a given schema will have a target namespace which corresponds to the targetNamespace attribute. The appropriate form of schema document corresponding to a schema whose components have no target namespace is one which has no targetNamespace attribute specified at all. Optional. Specifies the version of the schema. It is for user convenience, and the XML Schema specification defines no semantics for it. Optional. Specifies the default value of the final attribute on element, simpleType, and complexType elements in the target namespace. The final attribute prevents a specified type of derivation of an element, simpleType, or complexType element. For element and complexType elements, this value can contain #all or a list that is a subset of extension or restriction. For simpleType elements, this value can additionally contain list and union:

• extension - prevents derivation by extension
• restriction - prevents derivation by restriction
• list - prevents derivation by list
• union - prevents derivation by union
• #all - prevents all derivation.

Optional. Specifies the default value of the block attribute on element and complexType elements in the target namespace. The block attribute prevents a complex type (or element) that has a specified type of derivation from being used in place of this complex type. This value can contain #all or a list that is a subset of extension, restriction, or substitution:

• extension - prevents complex types derived by extension
• restriction - prevents complex types derived by restriction
• substitution - prevents substitution of elements
• #all - prevents all derived complex types.

Optional. The form for attributes declared in the target namespace of this schema. The value must be "qualified" or "unqualified". Default is "unqualified".

• "unqualified" indicates that attributes from the target namespace are not required to be qualified with the namespace prefix.
• "qualified" indicates that attributes from the target namespace must be qualified with the namespace prefix.

Optional. The form for elements declared in the target namespace of this schema. The value must be "qualified" or "unqualified". Default is "unqualified".

• "unqualified" indicates that elements from the target namespace are not required to be qualified with the namespace prefix.
• "qualified" indicates that elements from the target namespace must be qualified with the namespace prefix.

Specify a set of attributes that apply to every complexType in a schema document. The default namespace used when evalueates the XPath expression. Optional. Specifies a unique ID for the element. It is for user convenience, and the XML Schema specification defines no semantics for it. for maxOccurs for all particles Specifies the minimum number of occurrences for this particle. Default is 1. Specifies the maximum number of occurrences for this particle. Default is 1. for element, group and attributeGroup, which both define and reference Specifies a name. Specifies a reference. 'complexType' uses this Specifies a group reference. Specifies a local element or a reference to a global element. Specifies a group reference. Specifies a local element or a reference to a global element. Specifies a group reference. Specifies an anonymous local simple type for the attribute in case the attribute does not have the type attribute to specify a built-in or a pre-declared type. The default when no simple type definition is referenced or provided is the simple ur-type definition, which imposes no constraints at all. The type attribute is used when the declaration can use a built-in or pre-declared simple type definition. Otherwise an anonymous <simpleType> is provided inline. The default when no simple type definition is referenced or provided is the simple ur-type definition, which imposes no constraints at all. Specifies the attribute use: prohibited, optional or required, default is optional. The default attribute specifies that the attribute is to appear unconditionally in the post-schema-validation infoset, with the supplied value used whenever the attribute is not actually present. The fixed attribute indicates that the attribute value if present must equal the supplied constraint value, and if absent receives the supplied value as for default. Specifies if a local attribute belongs to the schema target namespace or has no namespace. The value must be "qualified" or "unqualified". The default value is provided by the attributeFormDefault attribute on the enclosing <schema> element. Specifies the target namespace for local attribute declarations. The namespace URI may be different from the schema target namespace. Specifies if the attribute is inheritable. Inheritable attributes can be used by <alternative> element on descendant elements. Specifies an anonymous local simple type for the attribute in case the attribute does not have the type attribute to specify a built-in or a pre-declared type. The default when no simple type definition is referenced or provided is the simple ur-type definition, which imposes no constraints at all. Specifies the required top level attribute name. Specifies if the attribute is inheritable. Inheritable attributes can be used by <alternative> element on descendant elements. Specifies an attribute. Specifies an attribute group reference. Enables the author to extend the XML document with attributes not specified by the schema. Specify an element or attribute that is not allowed. The element is used to make assertions about element and attribute values. Specifies the XPath expression to be evaluated when the element is validated. The default namespace used when evalueates the XPath expression. This branch is short for <complexContent> <restriction base="xs:anyType"> ... </restriction> </complexContent> Will be restricted to required or prohibited Not allowed if simpleContent child is chosen. May be overridden by setting on complexContent child. Specifies whether the complex type is abstract or not. Default is false. Complex types for which abstract is true must not be used as the type definition for the validation of element information items. Abstract complex types can be used as base type definitions, or even as the type definitions of element declarations, provided in every case a concrete derived type definition is used for validation. A complex type with an empty specification for final can be used as a base type definition for other types derived by either of extension or restriction; the explicit values extension, and restriction prevent further derivations by extension and restriction respectively. If all values are specified, then the complex type is said to be final, because no further derivations are possible. Finality is not inherited, that is, a type definition derived by restriction from a type definition which is final for extension is not itself, in the absence of any explicit final attribute of its own, final for anything. Specifies the value of the block attribute on this complexType The block attribute prevents a complex type that has a specified type of derivation from being used in place of this complex type. This value can contain #all or a list that is a subset of extension and restriction:

• extension - prevents complex types derived by extension
• restriction - prevents complex types derived by restriction
• #all - prevents all derived complex types.

The <schema> element can carry a defaultAttributes attribute, which identifies a named Attribute Group Definition; each complex type defined in the schema document then automatically includes that attribute group, unless this is overridden by the defaultAttributesApply attribute on the <complexType> element. Defines the name of the top level complex type. No complex type definition can have the same name as another simple or complex type definition. Specifies the base type for the restriction. This choice is added simply to make this a valid restriction per the REC Specifies the base type for the extension. Defines extensions or restrictions on a complex type that contains mixed content or elements only. Defines a restriction. Defines an extension. Overrides any setting on complexType parent. Specifies that any element can appear interleaved among the declared elements. Wildcard used to specify the elements accepted by open content. Specifies where the extension elements can be inserted. The value must be "interleave", "suffix" or "none". Default is "interleave". Specifies that any element can appear interleaved among the declared elements. Wildcard used to specify the elements accepted by default open content. Controls whether or not extension elements can be inserted into empty elements. Specifies where the extension elements can be inserted. This choice is added simply to make this a valid restriction per the REC No typeDefParticle group reference Contains extensions or restrictions on a text-only complex type or on a simple type as content and contains no elements. Defines restrictions on a simpleType, simpleContent, or a complexContent. Extends an existing simpleType or complexType element. Defines a top level complex type.
Complex Type Definitions provide for:

• Constraining element information items by providing Attribute Declarations governing the appearance and content of attributes.
• Constraining element information item children to be empty, or to conform to a specified element-only or mixed content model, or else constraining the character information item children to conform to a specified simple type definition.
• Using the mechanisms of Type Definition Hierarchy to derive a complex type from another simple or complex type.
• Specifying post-schema-validation infoset contributions for elements.
• Limiting the ability to derive additional types from a given complex type.
• Controlling the permission to substitute, in an instance, elements of a derived type for elements declared in a content model to be of a given complex type.

A utility type, not for public use #all or (possibly empty) subset of {substitution, extension, restriction} The element element can be used either at the top level to define an element-type binding globally, or within a content model to either reference a globally-defined element or type or declare an element-type binding locally. The ref form is not allowed at the top level. Specifies a local simple type. Defines a local complex type. Complex Type Definitions provide for:

• Constraining element information items by providing Attribute Declarations governing the appearance and content of attributes.
• Constraining element information item children to be empty, or to conform to a specified element-only or mixed content model, or else constraining the character information item children to conform to a specified simple type definition.
• Using the mechanisms of Type Definition Hierarchy to derive a complex type from another simple or complex type.
• Specifying post-schema-validation infoset contributions for elements.
• Limiting the ability to derive additional types from a given complex type.
• Controlling the permission to substitute, in an instance, elements of a derived type for elements declared in a content model to be of a given complex type.

The <alternative> element is used specify an element a choice types, depending on the value of the attributes. Specifies a type definition for this element by reference to a defined type. Defines the substitution group head element. XML Schema provides a mechanism, called substitution groups, that allows elements to be substituted for other elements. More specifically, elements can be assigned to a special group of elements that are said to be substitutable for a particular named element called the head element. (Note that the head element must be declared as a global element.). Specifies a default value for this element. The element must have either a simple type or a complex type emptiable and with mixed content. Specifies a fixed value for this element. If fixed is specified, then the element's content must either be empty, in which case fixed behaves as default, or its value must match the supplied constraint value. Specifies if the element is nillable, default is false. If nillable is true then an element may also be valid if it specifies xsi:nil="true" even if it has no text or element content despite a content type which would otherwise require content. Specifies if the element is abstract, default is false. Element declarations for which abstract is true can appear in content models only when substitution is allowed. Specifies the value of the final attribute for this element. The final attribute prevents a specified type of derivation of an element. For elements this value can contain #all or a list that is a subset of extension or restriction.

• extension - prevents derivation by extension
• restriction - prevents derivation by restriction
• #all - prevents all derivation.

Specifies the value of the block attribute on this element. The block attribute prevents an element that has a specified type of derivation from being used in place of this element. This value can contain #all or a list that is a subset of extension, restriction, or substitution. Specifies the target namespace for this element. The value must be "qualified" or "unqualified". The default value is provided by the elementFormDefault attribute on the enclosing <schema> element.

• "unqualified" indicates that a local element belongs to no namespace.
• "qualified" indicates that a local element belongs to the schema target namespace.

Specifies the target namespace for local element declarations. The namespace URI may be different from the schema target namespace. Specifies a local simple type. Defines a local complex type. Complex Type Definitions provide for:

• Constraining element information items by providing Attribute Declarations governing the appearance and content of attributes.
• Constraining element information item children to be empty, or to conform to a specified element-only or mixed content model, or else constraining the character information item children to conform to a specified simple type definition.
• Using the mechanisms of Type Definition Hierarchy to derive a complex type from another simple or complex type.
• Specifying post-schema-validation infoset contributions for elements.
• Limiting the ability to derive additional types from a given complex type.
• Controlling the permission to substitute, in an instance, elements of a derived type for elements declared in a content model to be of a given complex type.

The <alternative> element is used specify an element a choice types, depending on the value of the attributes. Specifies the required top level element name. Specifies a local simple type. Defines a local complex type. Complex Type Definitions provide for:

• Constraining element information items by providing Attribute Declarations governing the appearance and content of attributes.
• Constraining element information item children to be empty, or to conform to a specified element-only or mixed content model, or else constraining the character information item children to conform to a specified simple type definition.
• Using the mechanisms of Type Definition Hierarchy to derive a complex type from another simple or complex type.
• Specifying post-schema-validation infoset contributions for elements.
• Limiting the ability to derive additional types from a given complex type.
• Controlling the permission to substitute, in an instance, elements of a derived type for elements declared in a content model to be of a given complex type.

The <alternative> element is used specify an element a choice types, depending on the value of the attributes. Defines an element. An element declaration is an association of a name with a type definition, either simple or complex, an (optional) default value and a (possibly empty) set of identity-constraint definitions. This type is used for 'alternative' elements. Defines a simple type. A simple type definition is a set of constraints on strings and information about the values they encode, applicable to the normalized value of an attribute information item or of an element information item with no element children. Informally, it applies to the values of attributes and the text-only content of elements. Defines a local complex type. Complex Type Definitions provide for:

• Constraining element information items by providing Attribute Declarations governing the appearance and content of attributes.
• Constraining element information item children to be empty, or to conform to a specified element-only or mixed content model, or else constraining the character information item children to conform to a specified simple type definition.
• Using the mechanisms of Type Definition Hierarchy to derive a complex type from another simple or complex type.
• Specifying post-schema-validation infoset contributions for elements.
• Limiting the ability to derive additional types from a given complex type.
• Controlling the permission to substitute, in an instance, elements of a derived type for elements declared in a content model to be of a given complex type.

Specifies an XPath expression. If the XPath expression is evaluated to true,then the specified type is selected as the element type. The expressions allowed are limited to a subset of XPath 2.0.In the XPath expression are accessible only the attributes of the current element and inheriritable attributes from ancestor elements. Specifies the type of the element that should be used if the test attribute is evaluated to true. The type specified must be derived from the element declared type or a special simple type definition called xs:error (which has no valid instances). The default namespace used when evalueates the XPath expression. group type for explicit groups, named top-level groups and group references Specifies that the child elements can appear in any order. Each child element can occur 0 or 1 time. Allows only one of the elements contained in the <choice> declaration to be present within the containing element. Specifies that the child elements must appear in a sequence. Each child element can occur from 0 to any number of times. Specifies the required named group name. Specifies the group this group reference points to. group type for the three kinds of group This choice with min/max is here to avoid a pblm with the Elt:All/Choice/Seq Particle derivation constraint Specifies a local element or a reference to a global element. Specifies a group reference. Only elements allowed inside Specifies the minimum number of occurrences, possible values are 0 and 1, default is 1. Specifies the maximum number of occurrences, possible value is 1, default is 1. Specifies that the child elements can appear in any order. Each child element can occur 0 or 1 time. Allows only one of the elements contained in the <choice> declaration to be present within the containing element. Specifies that the child elements must appear in a sequence. Each child element can occur from 0 to any number of times. Defines a group of elements to be used in complex type definitions. Specifies the namespace(s) allowed by the wildcard, default is ##any standing for any namespace. Specify the namespace that extension elements or attributes cannot come from. Specifies the validation constraint to be applied on the content that matched the wildcard. Possible values are

• skip - that means no validation
• lax - that means validation will be performed if a schema is available
• strict - that means validation is required

The default is strict. Enables the author to extend the XML document with elements not specified by the schema. Specify an element or attribute that is not allowed. simple type for the value of the 'namespace' attr of 'any' and 'anyAttribute' Value is ##any - - any non-conflicting WFXML/attribute at all ##other - - any non-conflicting WFXML/attribute from namespace other than targetNS ##local - - any unqualified non-conflicting WFXML/attribute one or - - any non-conflicting WFXML/attribute from more URI the listed namespaces references (space separated) ##targetNamespace or ##local may appear in the above list, to refer to the targetNamespace of the enclosing schema or an absent targetNamespace respectively A utility type, not for public use A utility type, not for public use A utility type, not for public use A utility type, not for public use A utility type, not for public use Defines an attribute. Specifies the required named attribute group name. Specifies the attribute group this attribute group reference points to. Defines an attribute group to be used in complex type definitions. Adds multiple schemas with the same target namespace to a document. Required. Specifies the URI to the schema to include in the target namespace of the containing schema. Redefines simple and complex types, groups, and attribute groups from an external schema. Required. A URI to the location of a schema document. Optional. Specifies a unique ID for the element. Overrides simple and complex types, groups, and attribute groups from an external schema. Does not imposes constraints on the new definitions provided for components whose definitions are being overridden. Required. A URI to the location of a schema document. Adds multiple schemas with different target namespace to a document. Required. Specifies the URI of the namespace to import. Optional. Specifies the URI to the schema for the imported namespace. Specifies an XPath expression that selects a set of elements for an identity constraint. Defines the XPath selector expression. A subset of XPath expressions for use in selectors A utility type, not for public use The default namespace used when evalueates the XPath expression. Specifies an XPath expression that specifies the value used to define an identity constraint. Required. Identifies a single element or attribute whose content or value is used for the constraint. A subset of XPath expressions for use in fields A utility type, not for public use The default namespace used when evalueates the XPath expression. Specifies the required identity constraint name. The three kinds of identity constraints, all with type of or derived from 'keybase'. Defines that an element or an attribute value must be unique within the scope. Specifies an attribute or element value as a key (unique, non-nullable, and always present) within the containing element in an instance document. Specifies that an attribute or element value correspond to those of the specified key or unique element. Required. Specifies the name of a key or unique element defined in this or another schema. Describes the format of non-XML data within an XML document. Required. Specifies a name for the notation. Required. Specifies a URI corresponding to the public identifier. Optional. Specifies a URI corresponding to the system identifier. A utility type, not for public use A public identifier, per ISO 8879 Specifies information to be used by the application. Optional. A URI reference that specifies the source of the application information. Defines text comments in a schema. Optional. Specifies the source of the application information. Specifies schema comments. Optional. Specifies a unique ID for the element. notations for use within schema documents Not the real urType, but as close an approximation as we can get in the XML representation In keeping with the XML Schema WG's standard versioning policy, the material in this schema document will persist at the URI http://www.w3.org/2012/04/XMLSchema.xsd. At the date of issue it can also be found at the URI http://www.w3.org/2009/XMLSchema/XMLSchema.xsd. The schema document at that URI may however change in the future, in order to remain compatible with the latest version of XSD and its namespace. In other words, if XSD or the XML Schema namespace change, the version of this document at http://www.w3.org/2009/XMLSchema/XMLSchema.xsd will change accordingly; the version at http://www.w3.org/2012/04/XMLSchema.xsd will not change. Previous dated (and unchanging) versions of this schema document include: http://www.w3.org/2012/01/XMLSchema.xsd (XSD 1.1 Proposed Recommendation) http://www.w3.org/2011/07/XMLSchema.xsd (XSD 1.1 Candidate Recommendation) http://www.w3.org/2009/04/XMLSchema.xsd (XSD 1.1 Candidate Recommendation) http://www.w3.org/2004/10/XMLSchema.xsd (XSD 1.0 Recommendation, Second Edition) http://www.w3.org/2001/05/XMLSchema.xsd (XSD 1.0 Recommendation, First Edition) A utility type, not for public use #all or (possibly empty) subset of {restriction, extension, union, list} A utility type, not for public use Specifies the value of the final attribute on this simpleType. The final attribute prevents a specified type of derivation. For simpleType elements this value can contain #all or a list that is a subset of restriction, list or union:

• restriction - prevents derivation by restriction
• list - prevents derivation by list
• union - prevents derivation by union
• #all - prevents all derivation

Can be restricted to required or forbidden Required at the top level Forbidden when nested Defines a simple type. A simple type definition is a set of constraints on strings and information about the values they encode, applicable to the normalized value of an attribute information item or of an element information item with no element children. Informally, it applies to the values of attributes and the text-only content of elements. An abstract element, representing facets in general. The facets defined by this spec are substitutable for this element, and implementation-defined facets should also name this as a substitution-group head. Specifies a local simple type. Defines restrictions on a simpleType, simpleContent, or a complexContent. base attribute and simpleType child are mutually exclusive, but one or other is required Specifies the base type for the restriction. Defines a simple type element as a list of values. itemType attribute and simpleType child are mutually exclusive, but one or other is required Defines a simple type and specifies the constraints and information about the values of attributes or text-only elements. Specifies the name of a built-in data type or simpleType element defined in this or another schema. This attribute is not allowed if the content contains a simpleType element, otherwise it is required. Defines a simple type as a collection (union) of values from specified simple data types. memberTypes attribute must be non-empty or there must be at least one simpleType child Defines a simple type and specifies the constraints and information about the values of attributes or text-only elements. Optional. Specifies a list of built-in data types or simpleType elements defined in a schema. Specifies the facet value. Default is false, specifies whether the content has a fixed value. Specifies the lower bounds for numeric values (the value must be greater than this value). Specifies the lower bounds for numeric values (the value must be greater than or equal to this value). Specifies the upper bounds for numeric values (the value must be less than this value). Specifies the upper bounds for numeric values (the value must be less than or equal to this value). Specifies the facet value. Specifies the exact number of digits allowed. Must be greater than zero. Specifies the facet value. Specifies the maximum number of decimal places allowed. Must be equal to or greater than zero. Specifies the exact number of characters or list items allowed. Must be equal to or greater than zero. Specifies the minimum number of characters or list items allowed. Must be equal to or greater than zero. Specifies the maximum number of characters or list items allowed. Must be equal to or greater than zero. Defines a list of acceptable values. Specifies how white space (line feeds, tabs, spaces, and carriage returns) are handled. Specifies the facet value. Defines the exact sequence of characters that are acceptable. Specifies the regular expression constraint. The facet is used to constrain simpleTypes. An assertion is a predicate associated with a type, which is checked for each instance of the type. If an element or attribute information item fails to satisfy an assertion associated with a given type, then that information item is not locally valid with respect to that type. Specifies if the time zone in date/time datatypes is optional, required or prohibited. The value of this facet is one of these: required, prohibited, optional In keeping with the XML Schema WG's standard versioning policy, this schema document will persist at the URI http://www.w3.org/2012/04/datatypes.xsd. At the date of issue it can also be found at the URI http://www.w3.org/2009/XMLSchema/datatypes.xsd. The schema document at that URI may however change in the future, in order to remain compatible with the latest version of XSD and its namespace. In other words, if XSD or the XML Schema namespace change, the version of this document at http://www.w3.org/2009/XMLSchema/datatypes.xsd will change accordingly; the version at http://www.w3.org/2012/04/datatypes.xsd will not change. Previous dated (and unchanging) versions of this schema document include: http://www.w3.org/2012/01/datatypes.xsd (XSD 1.1 Proposed Recommendation) http://www.w3.org/2011/07/datatypes.xsd (XSD 1.1 Candidate Recommendation) http://www.w3.org/2009/04/datatypes.xsd (XSD 1.1 Candidate Recommendation) http://www.w3.org/2004/10/datatypes.xsd (XSD 1.0 Recommendation, Second Edition) http://www.w3.org/2001/05/datatypes.xsd (XSD 1.0 Recommendation, First Edition)