XML Schema内置数据类型

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Schema的内置类型继承关系

Schema内置类型说明

Table 2. Simple Types Built In to XML Schema
Simple Type Examples (delimited by commas) Notes
string Confirm this is electric
normalizedString Confirm this is electric see (3)
token Confirm this is electric see (4)
base64Binary GpM7
hexBinary 0FB7
integer ...-1,1,... see (2)
positiveInteger 1,2,... see (2)
negativeInteger ... -2,-1 see (2)
nonNegativeInteger 0,... see (2)
nonPositiveInteger ... -2,-1,0 see (2)
long -9223372036854775808,... -1,... 9223372036854775807 see (2)
unsignedLong 0,... 18446744073709551615 see (2)
int -2147483648,... 2147483647 see (2)
unsignedInt 0,...4294967295 see (2)
short -32768,... 32767 see (2)
unsignedShort 0,... 65535 see (2)
byte -128,...-1,... 127 see (2)
unsignedByte 0,... 255 see (2)
decimal -1.23,123.4,1000.00 see (2)
float -INF,-1E4,-0,12.78E-2,12,INF,NaN equivalent to single-precision 32-bit floating point,NaN is "not a number",see (2)
double -INF,NaN equivalent to double-precision 64-bit floating point,see (2)
boolean true,false,0
duration P1Y2M3DT10H30M12.3S 1 year,2 months,3 days,10 hours,30 minutes,and 12.3 seconds
dateTime 1999-05-31T13:20:00.000-05:00 May 31st 1999 at 1.20pm Eastern Standard Time which is 5 hours behind Co-Ordinated Universal Time,see (2)
date 1999-05-31 see (2)
time 13:20:00.000,13:20:00.000-05:00 see (2)
gYear 1999 1999,see (2) (5)
gYearMonth 1999-02 the month of February 1999,regardless of the number of days,see (2) (5)
gMonth --05 May,see (2) (5)
gMonthDay --05-31 every May 31st,see (2) (5)
gDay ---31 the 31st day,see (2) (5)
Name shipTo XML 1.0 Name type
QName po:USAddress XML Namespace QName
NCName USAddress XML Namespace NCName,i.e. a QName without the prefix and colon
anyURI
http://www.example.com/,
http://www.example.com/doc.html#ID5
language en-GB,en-US,fr valid values for xml:lang as defined in XML 1.0
ID XML 1.0 ID attribute type,see (1)
IDREF XML 1.0 IDREF attribute type,see (1)
IDREFS XML 1.0 IDREFS attribute type,see (1)
ENTITY XML 1.0 ENTITY attribute type,see (1)
ENTITIES XML 1.0 ENTITIES attribute type,see (1)
NOTATION XML 1.0 NOTATION attribute type,see (1)
NMTOKEN
US,
Brésil
XML 1.0 NMTOKEN attribute type,see (1)
NMTOKENS
US UK,
Brésil Canada Mexique
XML 1.0 NMTOKENS attribute type,i.e. a whitespace separated list of NMTOKEN's,see (1)

Notes:

(1) To retain compatibility between XML Schema and XML 1.0 DTDs,the simple types ID,IDREF,IDREFS,ENTITY,ENTITIES,NOTATION,NMTOKEN,NMTOKENS should only be used in attributes.

(2) A value of this type can be represented by more than one lexical format,e.g. 100 and 1.0E2 are both valid float formats representing "one hundred". However,rules have been established for this type that define a canonical lexical format,seeXML Schema Part 2.

(3) Newline,tab and carriage-return characters in a normalizedString type are converted to space characters before schema processing.

(4) As normalizedString,and adjacent space characters are collapsed to a single space character,and leading and trailing spaces are removed.

(5) The "g" prefix signals time periods in the Gregorian calendar.

各种内置类型详解

1:string及其相关类型

string:保留原始字符串。

normalizedString:字符串中Newline、tab和carriage-return都会被替换成空白。

token:字符串中Newline、tab和carriage-return都会被替换成空白,并且字符串中间连续的空白会被压缩成一个,字符串前后的空白会被自动删除

Name:要求是合法的XML签名。

NCName:不带命名空间的XML签名。

QName:带命名空间的XML签名。

由string派生出来的ID、IDREF、ENTITY、ENTITIES、NMTOKEN、NMTOKENS类型只能用来约束属性

ID:标识符。

IDREF:引用另一个ID。

IDREFS:引用多个已有的ID,空格为分隔符。

NMTOKEN:必须是合法的XML名称,只能由字母、数字、_、-、.、:组成。

NMTOKENS:多个NMTOKEN,空格为分隔符。

ENTITY:外部实体。

ENTITIES:多个外部实体,空格为分隔符。

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