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Schema (XSD)
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XML Schema 参考
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Schema (XSD) 中的 XML Schema 参考


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XSD Elements
XSD 元素

Element
元素
Explanation
解释
all Specifies that the child elements can appear in any order. Each child element can occur 0 or 1 time
指定了子元素可以以任意顺序出现,每个子元素出现0或1次
annotation Specifies the top-level element for schema comments
为schema注释指定了最高级元素
any Enables the author to extend the XML document with elements not specified by the schema
让作者能够使用未被schema指定的元素来扩展XML文件的内容
anyAttribute Enables the author to extend the XML document with attributes not specified by the schema
让作者能够使用未被schema指定的属性来扩展XML文件的内容
appInfo Specifies information to be used by the application (must go inside annotation)
指定了应用程序所使用的信息(必须写在注释里)
attribute Defines an attribute
定义一个属性
attributeGroup Defines an attribute group to be used in complex type definitions
定义用于复合类型定义的属性组
choice Allows only one of the elements contained in the <choice> declaration to be present within the containing element
只允许<choice>声明中的元素内的一个元素出现在所包含的元素中。
complexContent Defines extensions or restrictions on a complex type that contains mixed content or elements only
在包含混合内容和元素的复合类型中定义扩展或约束条件
complexType Defines a complex type element
定义一个复合类型元素
documentation Defines text comments in a schema (must go inside annotation)
定义一个位于schema内的文本注释(必须写在注释里)
element Defines an element
定义一个元素
extension Extends an existing simpleType or complexType element
扩展一个现存的简单类型或复合类型元素
field Specifies an XPath expression that specifies the value used to define an identity constraint
指定一个XPath表达式,以指明用于定义身份约束的值
group Defines a group of elements to be used in complex type definitions
定义一个用于复合类型定义的元素组
import Adds multiple schemas with different target namespace to a document
用不同的目标命名空间把多项schema添加到一个文件中
include Adds multiple schemas with the same target namespace to a document
用同一目标命名空间把多项schema添加到文件中
key Specifies an attribute or element value as a key (unique, non-nullable, and always present) within the containing element in an instance document
在案例文档中所包含的元素内指定某属性值或元素值,使它们成为一个“键”(该“键”是特殊的、非零的、长期存在)
keyref Specifies that an attribute or element value correspond to those of the specified key or unique element
定义与指定的“键”或独立元素相符合的属性值和元素值
list Defines a simple type element as a list of values
以值列表的形式定义一个简单类型元素
notation Describes the format of non-XML data within an XML document
描述XML文档中的非XML形式的数据的格式
redefine Redefines simple and complex types, groups, and attribute groups from an external schema
从外部的schema中重新定义简单类型和复合类型、群以及属性群
restriction Defines restrictions on a simpleType, simpleContent, or a complexContent
在简单类型、简单文本或复合文本上定义约束条件
schema Defines the root element of a schema
定义schema 的根元素
selector Specifies an XPath expression that selects a set of elements for an identity constraint
指定一段可供身份约束选择的一组节点的XPath表达
sequence Specifies that the child elements must appear in a sequence. Each child element can occur from 0 to any number of times
指定子元素必须按照特定的顺序出现。每个子元素可以出现任意次
simpleContent Contains extensions or restrictions on a text-only complex type or on a simple type as content and contains no elements
包含仅文本元素的复合类型或简单类型的文本的扩展和约束条件,不包含元素
simpleType Defines a simple type and specifies the constraints and information about the values of attributes or text-only elements
定义一个简单类型,指定关于属性值或仅文本元素的信息
union Defines a simple type as a collection (union) of values from specified simple data types
从已指定的简单数据类型中定义简单类型,作为值的集合
unique Defines that an element or an attribute value must be unique within the scope
定义在所属范围内一个元素值或属性值必须是独立的(未重复的)

 


XSD Restrictions/Facets for Datatypes
XSD 对各种数据类型的约束面

Look at XSD Restrictions!
先看一看关于XSD的约束!

Constraint
约束
Description
描述
enumeration Defines a list of acceptable values
定义了一系列可接受的属性值
fractionDigits Specifies the maximum number of decimal places allowed. Must be equal to or greater than zero
指定了允许使用的最大小数位数。必须等于大于0
length Specifies the exact number of characters or list items allowed. Must be equal to or greater than zero
指定了允许使用的字符或列表项的精确个数。必须等于大于零
maxExclusive Specifies the upper bounds for numeric values (the value must be less than this value)
指定了最大数值(数值必须小于最大数值)
maxInclusive Specifies the upper bounds for numeric values (the value must be less than or equal to this value)
指定了数值上限(数值必须小于等于数值上限)
maxLength Specifies the maximum number of characters or list items allowed. Must be equal to or greater than zero
指定了允许使用的字符或列表项的最大个数。必须大于等于0
minExclusive Specifies the lower bounds for numeric values (the value must be greater than this value)
指定了数值的下限(数值必须大于数值下限)
minInclusive Specifies the lower bounds for numeric values (the value must be greater than or equal to this value)
指定了数值的下限(数值要大于等于数值下限)
minLength Specifies the minimum number of characters or list items allowed. Must be equal to or greater than zero
指定了允许使用的字符和列表项的最小个数。必须大于等于0个
pattern Defines the exact sequence of characters that are acceptable
定义了可接受字符的精确序列
totalDigits Specifies the exact number of digits allowed. Must be greater than zero
定义了允许使用的阿拉伯数字的精确个数。必须大于0
whiteSpace Specifies how white space (line feeds, tabs, spaces, and carriage returns) is handled
定义了各种空白符(包括:换行符、制表符、空格、回车符)的处理方法

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