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<p>The rapid growth of distributed processing has lead to a need for a coordinating framework for the standardization of</p>
<p>Open Distributed Processing (ODP). This Reference Model of ODP provides such a framework. It creates an</p>
<p>architecture within which support of distribution, interworking, interoperability and portability can be integrated.</p>
<p>The Basic Reference Model of Open Distributed Processing (RM-ODP), (see ITU-T Recs. X.901 to X.904 | ISO/IEC</p>
<p>10746), is based on precise concepts derived from current distributed processing developments and, as far as possible,</p>
<p>on the use of formal description techniques for specification of the architecture.</p>
<p>The RM-ODP consists of:</p>
<p>? ITU-T Rec. X.901 | ISO/IEC 10746-1: 2YHUYLHZ:_ Contains a motivational overview of ODP giving</p>
<p>scooping, justification and explanation of key concepts, and an outline of ODP architecture. This part is</p>
<p>not normative.</p>
<p>? ITU-T Rec. X.902 | ISO/IEC 10746-2: )RXQGDWLRQV:_ Contains the definition of the concepts and</p>
<p>analytical framework and notation for normalized description of (arbitrary) distributed processing</p>
<p>systems. This is only to a level of detail sufficient to support ITU-T Rec. X.903 | ISO/IEC 10746-3 and to</p>
<p>establish requirements for new specification techniques. This part is normative.</p>
<p>? ITU-T Rec. X.903 | ISO/IEC 10746-3: $UFKLWHFWXUH: Contains_ the specification of the required</p>
<p>characteristics that qualify distributed processing as open. These are the constraints to which ODP</p>
<p>standards must conform. It uses the descriptive techniques from ITU-T Rec. X.902 | ISO/IEC 10746-2.</p>
<p>This part is normative.</p>
<p>? ITU-T Rec. X.904 | ISO/IEC 10746-4: $UFKLWHFWXUDO_6HPDQWLFV:_Contains a formalisation of the ODP</p>
<p>modeling concepts defined in ITU-T Rec. X.902 | ISO/IEC 10746-2, clauses 8 and 9, and a formalisation</p>
<p>of the viewpoint languages of ITU-T Rec. X.903 | ISO/IEC 10746-3. The formalisation is achieved by</p>
<p>interpreting each concept in terms of the constructs of the different standardized formal description</p>
<p>techniques. This part is normative.</p>
<p>The purpose of this Recommendation | International Standard is to provide an architectural semantics for ODP. This</p>
<p>essentially takes the form of an interpretation of the basic modeling and specification concepts of ITU-T Rec. X.902 |</p>
<p>ISO/IEC 10746-2 and viewpoint languages of ITU-T Rec. X.903 | ISO/IEC 10746-3, using the various features of</p>
<p>different formal specification languages. An architectural semantics is developed in four different formal specification</p>
<p>languages: LOTOS, ESTELLE, SDL and Z. The result is a formalization of ODP's architecture. Through a process of</p>
<p>iterative development and feedback, this has improved the consistency of ITU-T Rec. X.902 | ISO/IEC 10746-2 and</p>
<p>ITU-T Rec. X.903 | ISO/IEC 10746-3.</p>
<p>An architectural semantics provides the additional benefits of:</p>
<p>? assisting the sound and uniform development of formal descriptions of ODP systems; and</p>
<p>? of permitting uniform and consistent comparison of formal descriptions of the same standard in different</p>
<p>formal specification languages.</p>
<p>Rather than provide a mapping from all the concepts of ITU-T Rec. X.902 | ISO/IEC 10746-2, this Recommendation |</p>
<p>International Standard focuses on the most basic. A semantics for the higher level architectural concepts is provided</p>
<p>indirectly through their definition in terms of the basic ODP concepts.</p>
<p>Examples of the use of some of the formal specification languages in this report can be found in TR 10167 (Guidelines</p>
<p>for the Application of ESTELLE, LOTOS and SDL).</p>
<p>In the following clauses, the concepts are numbered in accordance with the scheme used in ITU-T Rec. X.902 |</p>
<p>ISO/IEC 10746-2.</p>
<p>This Recommendation | International Standard specifies an architectural semantics for ODP. This is required to:</p>
<p>? provide formalisation of the ODP modelling concepts;</p>
<p>? assist sound and uniform development of formal descriptions of standards for distributed systems;</p>
<p>? act as a bridge between the ODP modelling concepts and the semantic models of the specification</p>
<p>languages: LOTOS, SDL, ESTELLE and Z;</p>
<p>? provide a basis for uniform and consistent comparison between formal descriptions of the same standard</p>
<p>in specification languages that are used to develop an architectural semantics.</p>
<p>This part is normative.</p>
Reģistrācijas numurs (WIID)
20698
Darbības sfēra
<p>The rapid growth of distributed processing has lead to a need for a coordinating framework for the standardization of</p>
<p>Open Distributed Processing (ODP). This Reference Model of ODP provides such a framework. It creates an</p>
<p>architecture within which support of distribution, interworking, interoperability and portability can be integrated.</p>
<p>The Basic Reference Model of Open Distributed Processing (RM-ODP), (see ITU-T Recs. X.901 to X.904 | ISO/IEC</p>
<p>10746), is based on precise concepts derived from current distributed processing developments and, as far as possible,</p>
<p>on the use of formal description techniques for specification of the architecture.</p>
<p>The RM-ODP consists of:</p>
<p>? ITU-T Rec. X.901 | ISO/IEC 10746-1: 2YHUYLHZ:_ Contains a motivational overview of ODP giving</p>
<p>scooping, justification and explanation of key concepts, and an outline of ODP architecture. This part is</p>
<p>not normative.</p>
<p>? ITU-T Rec. X.902 | ISO/IEC 10746-2: )RXQGDWLRQV:_ Contains the definition of the concepts and</p>
<p>analytical framework and notation for normalized description of (arbitrary) distributed processing</p>
<p>systems. This is only to a level of detail sufficient to support ITU-T Rec. X.903 | ISO/IEC 10746-3 and to</p>
<p>establish requirements for new specification techniques. This part is normative.</p>
<p>? ITU-T Rec. X.903 | ISO/IEC 10746-3: $UFKLWHFWXUH: Contains_ the specification of the required</p>
<p>characteristics that qualify distributed processing as open. These are the constraints to which ODP</p>
<p>standards must conform. It uses the descriptive techniques from ITU-T Rec. X.902 | ISO/IEC 10746-2.</p>
<p>This part is normative.</p>
<p>? ITU-T Rec. X.904 | ISO/IEC 10746-4: $UFKLWHFWXUDO_6HPDQWLFV:_Contains a formalisation of the ODP</p>
<p>modeling concepts defined in ITU-T Rec. X.902 | ISO/IEC 10746-2, clauses 8 and 9, and a formalisation</p>
<p>of the viewpoint languages of ITU-T Rec. X.903 | ISO/IEC 10746-3. The formalisation is achieved by</p>
<p>interpreting each concept in terms of the constructs of the different standardized formal description</p>
<p>techniques. This part is normative.</p>
<p>The purpose of this Recommendation | International Standard is to provide an architectural semantics for ODP. This</p>
<p>essentially takes the form of an interpretation of the basic modeling and specification concepts of ITU-T Rec. X.902 |</p>
<p>ISO/IEC 10746-2 and viewpoint languages of ITU-T Rec. X.903 | ISO/IEC 10746-3, using the various features of</p>
<p>different formal specification languages. An architectural semantics is developed in four different formal specification</p>
<p>languages: LOTOS, ESTELLE, SDL and Z. The result is a formalization of ODP's architecture. Through a process of</p>
<p>iterative development and feedback, this has improved the consistency of ITU-T Rec. X.902 | ISO/IEC 10746-2 and</p>
<p>ITU-T Rec. X.903 | ISO/IEC 10746-3.</p>
<p>An architectural semantics provides the additional benefits of:</p>
<p>? assisting the sound and uniform development of formal descriptions of ODP systems; and</p>
<p>? of permitting uniform and consistent comparison of formal descriptions of the same standard in different</p>
<p>formal specification languages.</p>
<p>Rather than provide a mapping from all the concepts of ITU-T Rec. X.902 | ISO/IEC 10746-2, this Recommendation |</p>
<p>International Standard focuses on the most basic. A semantics for the higher level architectural concepts is provided</p>
<p>indirectly through their definition in terms of the basic ODP concepts.</p>
<p>Examples of the use of some of the formal specification languages in this report can be found in TR 10167 (Guidelines</p>
<p>for the Application of ESTELLE, LOTOS and SDL).</p>
<p>In the following clauses, the concepts are numbered in accordance with the scheme used in ITU-T Rec. X.902 |</p>
<p>ISO/IEC 10746-2.</p>
<p>This Recommendation | International Standard specifies an architectural semantics for ODP. This is required to:</p>
<p>? provide formalisation of the ODP modelling concepts;</p>
<p>? assist sound and uniform development of formal descriptions of standards for distributed systems;</p>
<p>? act as a bridge between the ODP modelling concepts and the semantic models of the specification</p>
<p>languages: LOTOS, SDL, ESTELLE and Z;</p>
<p>? provide a basis for uniform and consistent comparison between formal descriptions of the same standard</p>
<p>in specification languages that are used to develop an architectural semantics.</p>
<p>This part is normative.</p>
