Publication CODE |
Title |
ISO/IEC 8825-4:2008 (2008-12) |
INFORMATION TECHNOLOGY -- ASN.1 ENCODING RULES: XML ENCODING RULES (XER) |
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Price Excl. VAT |
Total number of pages, tables and drawings |
206.00 €
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72 P.. |
Description
ISO/IEC 8825-4:2008 specifies a set of basic XML Encoding Rules (BASIC-XER) that can be used to derive a transfer syntax for values of types defined in ISO/IEC 8824-1 and ISO/IEC 8824-2. It also specifies a set of Canonical XML Encoding Rules (CXER) which provide constraints on the basic XML Encoding Rules and produce a unique encoding for any given ASN.1 value. ISO/IEC 8825-4:2008 further specifies a set of extended XML Encoding Rules (EXTENDED-XER) which adds further encoder options, and also allows the ASN.1 specifier to vary the encoding that would be produced by BASIC-XER. It is implicit in the specification of these encoding rules that they are also used for decoding.
The encoding rules specified in ISO/IEC 8825-4:2008:
- are used at the time of communication;
- are intended for use in circumstances where displaying of values and/or processing them using commonly available XML tools (such as browsers) is the major concern in the choice of encoding rules;
- allow the extension of an abstract syntax by addition of extra values for all forms of extensibility described in ISO/IEC 8824-1.
ISO/IEC 8825-4:2008 also specifies the syntax and semantics of XER encoding instructions, and the rules for their assignment and combination. XER encoding instructions can be used to control the EXTENDED-XER encoding for specific ASN.1 types.
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Class |
C990
(IEC PUBLICATIONS IEC PUBLICATIONS)
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Committee |
ISO/IEC JTC 1/SC 6
TELECOMMUNICATIONS AND INFORMATION EXCHANGE BETWEEN SYSTEMS
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BEC Approval |
2008-12-15 |
ICS-Code (International Standards Classification) |
35.100.60
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NBN Status |
New |
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IEC publication date |
2008-12-15 |
IEC last modification date |
2015-11-18 |
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