ISO 22643-2003 PDF

Full title and description

ISO 22643:2003 — Space data and information transfer systems — Data entity dictionary specification language (DEDSL) — XML/DTD Syntax. This International Standard specifies the requirements and rules for an XML/DTD representation of a Data Entity Dictionary Specification Language (DEDSL) to support machine-readable dictionaries and metadata exchange within space data systems.

Abstract

Specifies the required XML and DTD syntax for expressing data entity dictionaries (DEDSLs) used in space data and information transfer systems, enabling consistent definition of data entities (names, definitions, units, attributes) and their validation in XML-based exchanges.

General information

• Status: Published (International Standard; reviewed/confirmed in later systematic reviews).
• Publication date: 2003 (Edition 1, published March 2003; listings commonly show availability from 1 April 2003).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 49.140 (Space systems and operations).
• Edition / version: Edition 1 (2003).
• Number of pages: 99 pages.

Scope

Defines the concrete XML/DTD syntax for expressing a Data Entity Dictionary Specification Language (DEDSL). The standard provides the structural rules and required elements to represent data-entity semantics in XML so dictionaries can be parsed, validated and exchanged across space-data producers and consumers. It complements the DEDSL abstract syntax standard and alternative syntaxes (PVL), ensuring consistent machine-readable semantics for data products and metadata in the space-data community.

Key topics and requirements

• XML and DTD grammar and naming conventions required for DEDSL instances.
• Mandatory and optional attributes for data entities (name, definition, units, data type, permissible values, provenance).
• Rules for mapping the abstract DEDSL model to a concrete XML/DTD representation and for validating dictionaries against the DTD.
• Guidance on interoperability with CCSDS-derived metadata practices and other DEDSL syntaxes (PVL, abstract syntax).
• Examples and DTD modules illustrating typical dictionary structures and common data-entity classes.

Typical use and users

Used by space-mission data managers, instrument teams, archive and repository engineers, software developers building ingestion/validation tools, and standards/metadata architects within agencies and consortia (e.g., CCSDS participants) who need a machine-readable, standardized way to publish and exchange data dictionaries and metadata for space data products.

Related standards

Closely related to other DEDSL family standards and CCSDS recommendations, notably ISO 21961:2003 (DEDSL — Abstract syntax) and ISO 21962:2003 (DEDSL — PVL syntax). It sits within the ISO/TC 20/SC 13 suite of space data and information transfer systems standards and references CCSDS DEDSL recommendations for content and interoperability.

Keywords

DEDSL, data entity dictionary, XML, DTD, metadata, space data, CCSDS, interoperability, data dictionary syntax, ISO 22643:2003.

FAQ

Q: What is this standard?

A: ISO 22643:2003 is the ISO standard that defines the XML/DTD syntax for a Data Entity Dictionary Specification Language (DEDSL) used in space data and information transfer systems.

Q: What does it cover?

A: It covers the concrete XML element and attribute structures, DTD rules, and validation requirements needed to represent data-entity dictionaries so that data semantics (names, definitions, units, types, constraints) can be consistently encoded and exchanged.

Q: Who typically uses it?

A: Data producers (mission and instrument teams), archive and data center engineers, software developers for metadata tools, and standards/metadata architects working in the space-data community and organizations implementing CCSDS/ISO metadata practices.

Q: Is it current or superseded?

A: The original publication is Edition 1 (2003). The ISO record indicates the standard has been subject to periodic systematic review and was confirmed in subsequent reviews; as listed on the ISO catalogue the 2003 edition has been reviewed/confirmed in later review cycles. Users should check the ISO catalogue or their national standards body for any newer revisions or withdrawals before relying on it for new projects.

Q: Is it part of a series?

A: Yes — it is part of a family of DEDSL standards. Companion documents include the abstract-syntax standard (ISO 21961:2003) and alternative syntax standards (e.g., ISO 21962:2003 for PVL syntax), and the work is aligned with CCSDS recommendations used by the space-data community.

Q: What are the key keywords?

A: DEDSL, XML, DTD, data dictionary, metadata, space data, CCSDS, interoperability, data entity.