Restrictions for Datatypes
对数据类型的约束
| Constraint 约束 |
Description 说明 |
|---|---|
| enumeration | Defines a list of acceptable values 定义了一系列的有效值 |
| fractionDigits | Specifies the maximum number of decimal places allowed. Must be equal to or greater than zero 指定了允许的小数位数的最多位数。必须大于等于0 |
| length | Specifies the exact number of characters or list items allowed. Must be equal to or greater than zero 指定了允许的字符或列表项的个数。必须大于等于0 |
| maxExclusive | Specifies the upper bounds for numeric values (the value must be less than this value) 指定了数值的上限（数值要比这个值小） |
| 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（数值必须小于等于这个值） |
| maxLength | Specifies the maximum number of characters or list items allowed. Must be equal to or greater than zero 指定了所允许的字符或列表项的最多个数。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 （数值要比这个值小） |
| 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（数值必须大于等于这个值） |
| minLength | Specifies the minimum number of characters or list items allowed. Must be equal to or greater than zero 指定了所允许的字符或列表的最少个数。必须等于大于0个 |
| pattern | Defines the exact sequence of characters that are acceptable 定义了符合要求的字符的确切排列顺序 |
| totalDigits | Specifies the exact number of digits allowed. Must be greater than zero 指定了所允许的字符的确切个数。必须大于0 |
| whiteSpace | Specifies how white space (line feeds, tabs, spaces, and carriage returns) is handled 指定了空白该怎样被处理（换行符，制表符，空格符和回车符） |
String Data Types
字符串数据类型
Note that all of the data types below derive from the String data type (except for string itself)!
要注意下面所有的数据类型都是从字符串数据类型里派生出来的（除了字符串本身）
| Name 名称 |
Description 解释 |
|---|---|
| ENTITIES | |
| ENTITY | |
| ID | A string that represents the ID attribute in XML (only used with schema attributes) 象征XML的ID属性的字符串（只用在schema属性里） |
| IDREF | A string that represents the IDREF attribute in XML (only used with schema attributes) 象征XML里的IDREF属性的字符串（只能和schema属性一起使用） |
| IDREFS | |
| language | A string that contains a valid language id 含有正确的语言ID的字符串 |
| Name | A string that contains a valid XML name 含有一个有效的XML名称的字符串 |
| NCName | |
| NMTOKEN | A string that represents the NMTOKEN attribute in XML (only used with schema attributes) 象征XML里的NMTOKEN属性的字符串（只能和schema属性一起使用） |
| NMTOKENS | |
| normalizedString | A string that does not contain line feeds, carriage returns, or tabs 不含有换行符，回车符或制表符的字符串 |
| QName | |
| string | A string 一个字符串 |
| token | A string that does not contain line feeds, carriage returns, tabs, leading or trailing spaces, or multiple spaces 不含有换行符，回车符，制表符，头尾空格，或重复空格的字符串 |