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Work item:
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Z.100
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Subject/title:
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Specification and Description Language: Overview of SDL-2008
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Status:
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[Carried to next study period]
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Approval process:
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AAP
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Type of work item:
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Recommendation
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Version:
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Rev.
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Equivalent number:
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-
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Timing:
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-
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Liaison:
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-
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Supporting members:
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-
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Summary:
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This Recommendation gives an overview and common material (such as conventions) for the Specification and Description Language as redefined in the ITU-T 2005-2008 period and called SDL 2008. SDL-2008 is further defined in Z.101 to Z.106. Z.100 (2007) for SDL-2000 is distributed over Z.100, Z.101, Z.102, Z.103 and Z.104; Z.105 (07/03), Z.106 (08/02) and Z.109 (06/07) are revised; Z.107 (11/99) is withdrawn. The Specification and Description Language has concepts for behavior, data description and (particularly for larger systems) structuring. The basis of behavior description is extended finite state machines communicating by messages. Data description is based on data types for values and objects. The basis for structuring is hierarchical decomposition and type hierarchies. A distinctive feature is the graphical representation. SDL-2008 is backwards compatible with uses of the SDL-92 (amended in 1996) and SDL-2000. Z.100 (2007) was issued to include the maintenance changes documented in the Z.100 series Implementers' Guide, and create a final edition of SDL-2000 on which SDL-2008 could be firmly based, whereas the Z.100 series for SDL-2008 adds significant new features and results from the study undertaken during the 2005-2008 period. SDL-2008 complements rather than changes the agreement reached on the approval of SDL-2000.
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Comment:
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-
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Reference(s):
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Historic references:
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Contact(s):
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| ITU-T A.5 justification(s): |
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First registration in the WP:
2008-05-09 14:06:13
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Last update:
2008-05-09 14:06:48
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