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Definitions for talking about directories (RFC3254)

IP.com Disclosure Number: IPCOM000007693D
Original Publication Date: 2002-Apr-01
Included in the Prior Art Database: 2002-Apr-16
Document File: 12 page(s) / 22K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

H. Alvestrand: AUTHOR

Abstract

When discussing systems for making information accessible through the Internet in standardized ways, it may be useful if the people who are discussing it have a common understanding of the terms they use.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 16% of the total text.

Network Working Group                                      H. Alvestrand

Request for Comments: 3254                                 Cisco Systems

Category: Informational                                       April 2002

               Definitions for talking about directories

Status of this Memo

   This memo provides information for the Internet community.  It does

   not specify an Internet standard of any kind.  Distribution of this

   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2002).  All Rights Reserved.

Abstract

   When discussing systems for making information accessible through the

   Internet in standardized ways, it may be useful if the people who are

   discussing it have a common understanding of the terms they use.

   For example, a reference to this document would give one the power to

   agree that the DNS (Domain Name System) is a global lookup repository

   with perimeter integrity and loose, converging consistency.  On the

   other hand, a LDAP (Lightweight Directory Access Protocol) directory

   server is a local, centralized repository with both lookup and search

   capability.

   This document discusses one group of such systems which is known

   under the term, "directories".

1. Introduction and basic terms

   We suggest using the following terms for the remainder of this

   document:

   -  Information: Facts and ideas which can be represented (encoded) as

      data in various forms.

   -  Data: Information in a specific physical representation, usually a

      sequence of symbols that have meaning; especially a representation

      of information that can be processed or produced by a computer.

      (From [SEC].)

   -  Repository: An amount of data that is accessible through one or

      more access methods.

Alvestrand                   Informational                      [Page 1]

RFC 3254       Definitions for talking about directories      April 2002

   -  Requester: Entity that may (try to) access data in a repository.

      Note that no assumption is made that the requester is animal,

      vegetable, or mineral.

   -  Maintainer: Entity that causes changes to the data in the

      repository. Usually, all maintainers are requesters, since they

      need to look at the data too, however, the roles are distinct.

   -  Access method: Well-defined series of operations that will cause

      data available from a repository to be obtained by the requester.

   -  Site: Entity that hosts all or part of a repository, and makes it

      available through one or more access methods.  A site may in

      various contexts be a machine, a datacenter, a network of

      datacenters, or a single device.

   This document is not intended to be either comprehensive or

   definitive, but is intended to give some aid in mutual comprehension

   when discussing information access methods to be incorporated into

   Internet Standards-Track documents.

2. Dimensions of classification

2.1 Uniqueness and scope

   Some information systems are global, in the sense that only one can

   sensibly exist in the world.

   Others are inherently local, in that each locality, site or even box

   will run its own information store, independent of all others.

   The following terms are suggested:

   -  Global repository: A repository that there can be only one of in

      the world.  The...