BS ISO/IEC 10026-4:1995 Information technology. Open systems interconnection. Distributed transaction processing - Protocol Implementation Conformance Statement (PICS) proforma
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This Recommendation | International Standard provides the PICS proforma for the Distributed Transaction Processing protocol as specified in ITU-T Rec. X.862 | ISO/IEC 10026-3 in compliance with the relevant requirements, and in accordance with the relevant guidance, given in CCITT Rec. X.291 | ISO/IEC 9646-2. Details of the use of this proforma is provided in this Recommendation | Part of ISO/IEC 10026. Implementors of implementations claiming conformance to ITU-T Rec. X.862 | ISO/IEC 10026-3 shall complete the proforma as part of the conformance requirements. The level of detail required in the proforma exceeds that of the protocol specification by requiring details to uniquely identify the implementation and the supplier.
NOTE — PICS are related to base standards and only base standards. PICS Proforma structure might be expanded and refined for other documents (e.g. ISPs) using the base standards (e.g. ISPICS Proforma).
This Recommendation | International Standard for OSI Distributed Transaction Processing (TP) is one of a set of Recommendations | International Standards produced to facilitate the interconnection of computer systems. It is related to other CCITT Recommendations | International Standards in the set as defined by the Reference Model for Open Systems Interconnection (ITU-T Rec. X.200 | ISO/IEC 7498-1). The Reference Model subdivides the area of standardization for interconnection into a series of layers of specification, each of manageable size.
The aim of Open Systems Interconnection is to allow, with a minimum of technical agreement outside the interconnection standards, the interconnection of computer systems:
a) from different manufacturers;
b) under different management;
c) of different levels of complexity; and,
d) of different technologies.
The Recommendations | International Standard for OSI TP define a TP Model, a TP Service and specify a TP communications Protocol available within the Application Layer of the OSI Reference Model. The TP Service is of the category defined in the Application Layer Structure standard. It is concerned with identifiable information which can be related as transactions, which may involve two or more open systems.
The Recommendations | International Standard for OSI TP defines a basic TP Service. It provides sufficient facilities to support transaction processing, and establishes a framework for coordination across multiple TP resources in separate Open Systems.
The Recommendations | International Standard for OSI TP does not specify the interface to local resources or access facilities that are provided within the local system. However detailed consideration of access to the local resources and their management may lead to some enhancement in a future revision of the Recommendations | International Standard.
To evaluate conformance of a particular implementation, it is necessary to have a statement of which capabilities and options have been implemented for a given OSI protocol. Such a statement is called a Protocol Implementation Conformance Statement (PICS).
The PICS Proforma, Annex A, has been designed to be a self contained section of this Recommendation | Part of ISO/IEC 10026 for use in testing and procurement.
Data processing; Information exchange; Data transmission control procedures; Data transfer; Communication procedures; Computer networks; Open systems interconnection; Application layer (OSI); Computer-computer communications; Technical documents; Data transmission
