ISO IEC 9070:1991 pdf free download

06-23-2021 comment

ISO IEC 9070:1991 pdf free download.Information technology — SGML support facilities — Registration procedures for public text owner identifiers.
1 Scope
ISO IEC 9070 applies to the assignment of unique owner prefixes to owners of public text conforming to ISO 8879. It describes the procedures whereby such assignments are made, and the method of constructing registered owner names from them. Procedures for setf-assignment of owner prefixes by standards bodies and other organizations are also specified.
NOTE 2 Examples of reg4stered public text are given in annex A. Further examples may be found in annexes to ISO
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of ISO IEC 9070. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on ISO IEC 9070 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below, Members of IEC and ISO maintain registers of currently valid International Standards.
ISO 639:1988, Code for the representation of names of languages.
ISO 2108:1978. Documentation — International standard book numbering (iSBN).
ISO 2375:1985, Data processing — Procedure for registration of escape sequences.
ISO 3166:1988, Codes for the representation of names of countries.
ISO 6523:1984, Data interchange — Structuros for the identification of organizations.
3.1 ISBN prefix: A registered owner prefix constructed from components of an Intemetion& Standard Book Number.
NOTE 4 Its naming authority type s ISO registration authority.
3.2 ISO 2375 prefix: A registered owner prefix used to identify character sets registered in accordance with ISO 2375.
NOTE 5 Its naming authonty type is ISO registration authoñty.
3.3 ISO 9070 preflx A registered owner prefix assigned by the registration authority designated for ISO IEC 9070.
NOTE 6 Its naming authority type is ISO registration authority.
3.4 ISO co-publisher An organization with which the ISO jointly publishes standards and other publications, and whose name (or an abbreviation) appears in the publication number.
NOTE 7 For example, IEC.
3.5 ISO identified organization authority: An organization with an International Code Designator assigned in accordance with ISO 6523 that acts as a naming authority for issuing organization codes.
8 ISO 6523 specifies a Structure for the Identification of Organ&zations (SIO) for the purpose of facilitating data interchange, including recommendations regarding points on which prior agreement is necessary between interchange parties.
9 The ISO 6523 SlO consists of an International Code Designator (lCD), an organization code, and an organization name.
3.6 ISO member body authority: An ISO member body that is the naming authority and issuing organization for objects and organizations registered within its country.
3.7 ISO registration authority: A naming authority established by an international standard which specifies the procedures under which it operates.
3.8 ISO publication authority: An ISO/1EC standard or part that acts as a naming authority for public text or other public objects defined within it.
3.9 namIng authority: An issuer of registered owner prefixes for a class of public text or other public objects.
NOTE 10 Four kinds are recognized in ISO IEC 9070: ISO pubhcation authority, ISO registration author-
Successive instances of a syntactic token are deemed to be repetitions of a repeatable token, where permissible, rather than instances of multiple tokens.
The occurrence suffixes are applied first, then the ordering connectors. Parentheses can be used as in mathematics to change these priorities.
5 Public identifiers
A public identifier can be represented in three semantically equivalent ways:
a) In a canonical character string form, defined by the syntax productions in this clause. This form shall be used In all visible representations and for internal equality comparisons except for the special visual representations defined for ISO 2375 and ISBN prefixes.
b) In an SGML formal public identifier, defined in ISO 8879.
C) In a data structure known as a “structured name public identifier, defined in clause 6.
NOTE 18 This provision assures that the character string form of public identifier presented on screen menus and user documentation Is the exact equivalent of the form used internally and in data structures.
A standard that uses public identifiers can offer methods of abbreviating them in order to achieve efficiencies of storage or processing.
The alphabet of public identifiers is defined in terms of a character repertoire, with no implication of the coded character set that is used. A standard that uses public identifiers shall specify a means of identifying the coded character set that is used.
[1] public identifier — owner name, “II”. object name
[2] owner name = registered owner name I unregistered owner name
A public identifier cannot contain consecutive solidi VI) or consecutive colons (::) except where expressly permitted by this clause.
The length of an owner name shall not exceed 120 characters.
The length of an object name shall not exceed 100 characters.
A naming authority can restrict the length or character repertoire of an object name, but cannot restrict the length or character repertoire of those portions of an owner name that it does not itself assign.
5.2.3 ISO member body authority
[12) Iso member body authority prefix = where
aa is replaced by the ISO 31S6 2-character alphabetic country code for the country of a member body of ISO.
The equivalent ASN.1 object identifier is:
150 (1) Member-Body (2) nnn
nnn is replaced by the ISO 3166 3-digit numeric country code for the country of a member body of ISO.
5.2.4 ISO id.ntlfl.d organization authority
[131 ISO identified organization authority prefix = ICD”. “liii”, /“, 000o”
iiii is replaced by the 4-digit International Code Designator assigned in accordance with ISO 6523.
oooo is replaced by the 1-14 character organization code assigned in accordance with ISO
The oquivalont ASN.1 object idontifier is ISO (1) Identified-Organization (3) iiii
where iiii is as defined above.
5.3 Unregistered owner name
All unregistered owner names have a common owner prefix, consisting of the word UNREGISTERED’. The corresponding ASN.1 object identifier is the null object identifier.
An unregistered owner name must include at least one owner name component, but in other respects is the same as a registered owner name.
NOTE 32 The user of a public identifier with an unregistered owner name should either ensure that the name is unique within the scope of the operations in which it is used, or else assume the risk that it is not unique, For example, its use might be appropriate for local development and testing pending the completed registration of an organizational owner name.

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