ISO/TC 211
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The ISO specifications for Metadata and Services have been developed in close cooperation with the OGC. ISO operates the ISO/TC 211 World Wide Web server to disseminate relevant information. ISO/TC 211 develops geographic data standards.
Refer to the ISO/TC 211 scope page for more details.
(The following snippets describe the relevant parts for Mapbender implementations found on the ISO/TC 211 Server)
Contents |
ISO 19115 Geographic information - Metadata
Scope
Definition of the schema required for describing geographic information and services.
Purpose and justification
A consistent suite of geographic information schemata allows geographic information to be integrated with information technology. The goal of this work item is to produce a schema for geographic information metadata. Metadata includes information about the currency, accuracy, data content and attributes, sources, prices, coverage, and suitability for a particular use.
Data describing a data set is becoming ever more important for locating and accessing information of all kinds. A standardized conceptual schema for geographic information metadata will increase the ability of geographic information created for one application to be found and properly evaluated for use in another application. The schema will be used by geographic information users to add metadata in a consistent and verifiable form to data being created and to evaluate quickly and accurately the data being selected from other sources. Geographic information system and software developers will use the schema to provide applications that provide consistent methods of handling metadata.
19119 Geographic information - Services
Scope
Identification and definition of the service interfaces used for geographic information and definition of the relationship to the Open Systems Environment model.
Purpose and justification
The definition of service interfaces will allow a variety of applications with different levels of functionality to access and use geographic information. While specialized services will appropriately remain an arena for proprietary products, the interfaces to those services will be standardized. Geographic information system and software developers will use these standards to provide general and specialized services that can be used with all geographic information.
It is important that work in this area is integrated with the approaches being developed within the more general world of information technology.
19139 Geographic information - Metadata - Implementation specification
Scope
This technical specification will define a UML implemenation model that is based on the ISO 19115 abstract UML model. This specification and the associated implemenation model will be used in conjunction with an XML schema that will also be defined in this document to describe digital geographic datasets. The implementation described in this document can also be used to describe many other forms of geographic data such as maps, charts and textual documents. It will illustrate how to provide information about the identification, the quality, the spatial reference, and the distribution of digitial geographic data.
Purpose and justification
ISO 19115 Geographic information - Metadata defines the guidelines for desribing geographic information and services. It provides information about the identification, the quality, the spatial and temporal schema, spatial reference, and distribution of digital geographic data. In order to illustrate a proper implementation of metadata, simple, conceptual ISO 19103-defined data types should be replaced with XSD equivalents. Likewise, data types referencing other conceptual, ISO 19100-series data types should be replaced with implementationally-equivalent data types, based on XSD simple types. All pointers should be eliminated and treated as data types. Finally, all elements that will never possibly be referenced within the ISO 19115 model should be removed for the technical implemenation specification.
