Iso metadata

Certain conditional metadata elements might not apply to these other forms of data. Proof returned by secretariat 60 Publication Check out our FAQs. Buy this standard. This standard was last reviewed and confirmed in Therefore this version remains current. Abstract Preview ISO defines the schema required for describing geographic information and services by means of metadata. ISO is applicable to: -the cataloguing of all types of resources, clearinghouse activities, and the full description of datasets and services; -geographic services, geographic datasets, dataset series, and individual geographic features and feature properties.

ISO defines: -mandatory and conditional metadata sections, metadata entities, and metadata elements; -the minimum set of metadata required to serve most metadata applications data discovery, determining data fitness for use, data access, data transfer, and use of digital data and services ; -optional metadata elements to allow for a more extensive standard description of resources, if required; -a method for extending metadata to fit specialized needs. Defines general procedures for evaluating the quality of geospatial data and communicating the result.

For example, one way to assess quality is based on a data product specification. This revised standard supercedes the set of prior data quality standards that contributed to ISO , which are listed as follows:. The primary ISO metadata standards are listed as follows:. ISO Geographic Information -- Metadata and ISO Technical Corrigendum 1 Provides a structure for describing and discovering geospatial data, including when and where it's located, an overview of its content, its properties, quality, appropriate uses, distribution mechanism, points of contact for information, and so on.

It can be used to describe all types of geospatial resources including textual documents and non-geographic information. This standard is only capable of referencing an external ISO document that describes feature attributes. This standard is superceded by ISO Provides a means of describing services to support discovery when the information is made available to a catalog. Also defines concepts to specify the relationships between services, their interfaces and operations, and how they can be combined to achieve larger tasks.

The metadata content portion of this standard is superceded by ISO Extends ISO by adding concepts needed to describe the sensors used to collect geospatial data, and the data they collect, including the means for transforming the raw data. Some new elements were added and many codelists were extended; the new codelist values include those defined in the North American Profile of ISO Concepts for describing data quality have moved to ISO ; however, this standard supports including those concepts in an ISO metadata document.

This standard also supports including the feature catalog concepts defined in ISO in an ISO metadata document. Metadata created with the earlier version of the standard can remains as-is, and new metadata can be created with the updated specification.

The format in which metadata content is exchanged is determined by an implementation specification. This can also be referred to as an encoding standard or a serialization format.

XML is the only supported format. Some implementation specifications are published as separate standards with their own number; others are provided as an appendix to the content standard and share the same number.

The content standards described above are associated with the following implementation specifications as illustrated in the diagrams below:. Defines how concepts associated with many supporting ISO metadata content standards, including those listed below, are specified in XML format. As the framework for describing basic geospatial concepts, this standard is leveraged by most other implementation specifications.

The portion of this standard that provides the implementation specification for ISO will be superceded by ISO While this specification requires the use of data type definitions provided by ISO , a metadata document based on ISO is not compatible with an ISO metadata document. Because these standards are created and revised independently, problems occur when the primary metadata implementation specifications include the specifications for supporting standards.

If information in a supporting standard is directly included in another standard, a revision made to the supporting standard doesn't automatically update the other standard—the other standard must be revised independently to include the same changes, but this change will happen on a separate time line.

For example, metadata created according to ISO will always represent data quality information in the manner described by ISO when the data quality information model is revised in a new version of the data quality standards and specifications.

If one implementation specification leverages the data types defined in another implementation specification, this is a one-way flow of information. However, the implementation specification for ISO incorporates the data types from ISO in a manner that makes documents associated with the two different XML formats incompatible with each other.

When developing recent implementation specifications, efforts have been made to make them more compatible with each other and limit the disruption when standards and specifications are revised in the future. The CSDGM is based on typing content into a textual document, and suggests standardized values in some elements such as audio when describing a resource's format—possibly for a recording of wildlife sounds.

ISO incorporates the idea of controlled vocabularies, where a value must be selected from a predefined codelist. The ISO metadata codelist for describing an item's format doesn't have a value for audio resources.

The North American Profile adds values to various ISO codelists to ease the transition between the two content standards, including adding values to the format codelist for audio resources. The content adjustments defined in the North American Profile were typically incorporated when the standard was revised as ISO These three formats are also produced as output by the utility along with two different HTML formats. While generally the same, there are subtle differences between each specification.

Each ISO metadata content standard is associated with only one implementation specification and one serialization format. ISO metadata standards are revised periodically to ensure they remain viable. When revisions are completed for a content standard, its associated implementation specification must be updated accordingly. The following metadata content standards and implementation specifications are currently being revised or developed:.

ISO will not provide the specification for the content standards that support ISO Instead, ISO provides a means to include content formatted according to other implementation specifications as appropriate. In this way, an item's metadata can include data quality information and feature catalog information even though the specifications for those concepts are provided separately.

The supporting content standards can be revised independently without affecting ISO Basic geospatial concepts are serialized based on the data types defined in ISO This specification will be finalized soon. Some concepts in ISO are described based on the concepts provided in ISO , for example, how points of contact are defined and how resources are cited.

The implementation specification for these data types will be provided in ISO ISO will be revised such that it only defines the rules for generating XML schemas from the UML models provided by metadata content standards. The existing feature cataloging standard is under review as part of normal maintenance. Once the content standard has been revised, the implementation specification must also be updated. Because they are both provided in the same document, they may be updated at the same time, or the implementation specification may be moved to a separate document under a different number.

This standard is under revision as part of normal maintenance. When metadata describing a service is exported, it is valid according to the implementation specification OGC Catalogue Service for the Web CSW ; this specification includes XML schemas that can validate an ISO metadata document that includes service metadata descriptions.

As the metadata content standards change, new metadata elements and pages for editing can be added to the ArcGIS metadata editor to collect more content. New metadata styles can leverage the new pages and use new XSLT transformations to produce XML files that satisfy the new implementation specifications. The intent is to enable innovation in the way the market designs business solutions for managing records and to enable organisations to develop the records solutions that suit their specific requirements and implement them using innovative technical solutions.

The first ISO Information and documentation - Records management processes - Metadata for records - Part 1: Principles is a principles-based standard which links requirements for metadata to the core professional statements in the foundational ISO The second ISO Information and documentation -- Managing metadata for records - Part 2: Conceptual and implementation issues is a practical approach to implementation, providing discussion on implementation options, managing metadata and a conceptual model for defining metadata elements for records.

Additional resources Where to start.