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Difference between revisions of "Data Range"
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* An [[Attribute]] might have a value whose [[Data Range]] was defined in the schema of its [[Context]] as "telephone number". This telephone number [[Data Range]] might have a base type of [http://www.w3.org/TR/xmlschema-2/#string string] as defined by XML Schema Part 2, but for use in auto-dialing, it might also have a [http://www.w3.org/TR/xmlschema-2/#rf-pattern pattern] facet that constrains the syntax to be valid phone number in North American (e.g. it is of the form (NNN)-NNN-NNNN). | * An [[Attribute]] might have a value whose [[Data Range]] was defined in the schema of its [[Context]] as "telephone number". This telephone number [[Data Range]] might have a base type of [http://www.w3.org/TR/xmlschema-2/#string string] as defined by XML Schema Part 2, but for use in auto-dialing, it might also have a [http://www.w3.org/TR/xmlschema-2/#rf-pattern pattern] facet that constrains the syntax to be valid phone number in North American (e.g. it is of the form (NNN)-NNN-NNNN). | ||
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Latest revision as of 00:04, 10 November 2010
{{#eclipseproject:technology.higgins}}
Version
This pages describes the concept of Data Range used in Context Data Model 1.1.
Definition
- A Data Range defines the range of values of an Attribute
- A Data Range MUST have a base XML Schema type (e.g. String)
- A Data Range MAY include a set of constraining "facets" on its value(s). The names and semantics of these facets are taken from the Constraining Facets section of XML Schema Part 2. They include:
- Enumeration (e.g., must be one of {"red", "green", "blue"})
- Pattern (e.g. regular expression)
- Bounding (e.g. less than 5, more than 100)
See the Constraining Facets section of XML Schema Part 2 for detailed specifications and examples.
Examples
- An Attribute might have a value whose Data Range was defined in the schema of its Context as "telephone number". This telephone number Data Range might have a base type of string as defined by XML Schema Part 2, but for use in auto-dialing, it might also have a pattern facet that constrains the syntax to be valid phone number in North American (e.g. it is of the form (NNN)-NNN-NNNN).