XML Schema 数据类型

 1. XML数据类型

简单类型	实例和解释
string	"this is a string"
boolean	true, false
float	single-precision floating point
double	double precision 64-bit floating point
decimal	123.45
integer	-12345; 0; 12345
non-positive-integer	-12345; 0
negative-integer	-12345
long	1234567890123
int	123456789
short	12345
byte	123
non-negative-integer	0; 123456
unsigned-long	123456789012345
unsigned-int	1234567801
unsigned-short	12345
unsigned-byte	123
positive-integer	123456
date	2000-02-16
time	15:55:00.000
timeInstant	2000-12-31T05:55:00.000  (5:55 am, Coordinated Universal Time)
timeDuration	P5Y1M4D10H20M1.2S (5 years; 1 month; 4 days; 20 minutes; 1.2 seconds)
recurringInstant	--02-16T5:55:00 (February 16th every year at 5:55 am. Coordinated Universal Time)
binary	bit pattern
uri-reference	standard URL
ID*	XML 1.0 Compatibility
IDREF*	XML 1.0 Compatibility
ENTITY*	XML 1.0 Compatibility
NOTATION*	XML 1.0 Compatibility
language	en-US (see xml:lang in XML 1.0)
IDREFS*	XML 1.0 Compatibility
ENTITIES*	XML 1.0 Compatibility
NMTOKEN*	XML 1.0 Compatibility
NMTOKENS*	XML 1.0 Compatibility
Name	see XML 1.0
QName	(Prefix ':')? NCName = LocalPart (e.g.; po:Address)
NCName	(letter | '_') (NCNameChar)* *Use only in attributes to ensure compatibility with XML 1.0 DTD.

 

 

 

1. Schema标识

Item	Function
element	元素标识
name	元素名称
type	元素类型	xs:string xs:decimal xs:integer xs:boolean xs:date xs:time
default	元素默认值， 可有可无
fixed	元素不能覆盖好修改的固定值，可有可无

 

2. XSD有三种定义元素的方式:

1. 全定义方式

   <xs:element name="元素名称">
       <元素的结构类型定义></元素的结构类型定义>
   </xs:element>

2. 结构类型/数据类型引用方式

   <xs:element name="元素名称" type="元素的结构类型名称|数据类型名称" />

3. 元素引用方式

   <xs:element ref="引用元素定义的ID" />