| Element |
Explanation |
| all |
Specifies that the child elements can appear in any order. Each child
element can occur 0 or 1 time |
| annotation |
Specifies the top-level element for schema comments |
| any |
Enables the author to extend the XML document with elements
not specified by the schema |
| anyAttribute |
Enables the author to extend the XML document with attributes not specified
by the schema
|
| appinfo |
Specifies information to be used by the application (must
go inside annotation) |
| attribute |
Defines an attribute |
| attributeGroup |
Defines an attribute group to be used in complex type
definitions |
| choice |
Allows only one of the elements contained in the <choice>
declaration to be present within the containing element |
| complexContent |
Defines extensions or restrictions on a complex type that
contains mixed content or elements only |
| complexType |
Defines a complex type element |
| documentation |
Defines text comments in a schema (must go inside
annotation) |
| 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
namespace to a document |
| include |
Adds multiple schemas with the same target
namespace to a document |
| key |
Specifies an attribute or element value as a
key (unique, non-nullable, and always present) within the containing element
in an instance document |
| keyref |
Specifies that an attribute or element value correspond to
those of the specified key or unique element |
| list |
Defines a simple type element as a list of values |
| 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 |
| restriction |
Defines restrictions on a simpleType, simpleContent, or a
complexContent |
| schema |
Defines the root element of a schema |
| selector |
Specifies an XPath expression that selects a set of
elements for an identity constraint |
| sequence |
Specifies that the child elements must appear in a sequence. Each child
element can occur from 0 to any number of times |
| simpleContent |
Contains extensions or restrictions on a text-only complex type or on a simple type as content and contains no elements |
| simpleType |
Defines a simple type and specifies the constraints and
information about the values of attributes or text-only elements |
| union |
Defines a simple type as a collection (union) of values
from specified simple data types |
| unique |
Defines that an element or an attribute value must be
unique within the scope |
| Constraint |
Description |
| enumeration |
Defines a list of acceptable values |
| fractionDigits |
Specifies the maximum number of decimal places allowed.
Must be equal to or greater than zero |
| length |
Specifies the exact number of characters or list items
allowed. Must be equal to or greater than zero |
| maxExclusive |
Specifies the upper bounds for numeric values (the value
must be less than this value) |
| maxInclusive |
Specifies the upper bounds for numeric values (the value
must be less than or equal to this value) |
| maxLength |
Specifies the maximum number of characters or list items
allowed. Must be equal to or greater than zero |
| minExclusive |
Specifies the lower bounds for numeric values (the value
must be greater than this value) |
| minInclusive |
Specifies the lower bounds for numeric values (the value
must be greater than or equal to this value) |
| minLength |
Specifies the minimum number of characters or list items
allowed. Must be equal to or greater than zero |
| pattern |
Defines the exact sequence of characters that are
acceptable |
| totalDigits |
Specifies the maximum number of digits allowed. Must be
greater than zero |
| whiteSpace |
Specifies how white space (line feeds, tabs, spaces, and
carriage returns) is handled |