OSGeodata metadata exchange model: Unterschied zwischen den Versionen
Aus Geoinformation HSR
K (→Proposal of an information model to exchange spatial metadata) |
(→Dublin Core and its interpretation in spatial metadata) |
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| Zeile 8: | Zeile 8: | ||
This is the full list of (possibly repeatable) attributes from DC together with its semantic interpretation and/or enumeration list: | This is the full list of (possibly repeatable) attributes from DC together with its semantic interpretation and/or enumeration list: | ||
| − | * Relation: reference - Reference to other metadata records - especially useful for map service types (WxS) pointing to data service types (= file, database?) | + | * ''Relation'': reference - Reference to other metadata records - especially useful for map service types (WxS) pointing to data service types (= file, database?) |
| − | * Type: text or enum - Protocol type, e.g. file, WMS, WFS, etc... | + | * ''Type'': text or enum - Protocol type, e.g. file, WMS, WFS, etc... ('''important for service discovery''') |
| − | * Identifier: string - Unique id to identify an object in a certain context (URL or URN). | + | * '''Identifier''': string - Unique id to identify an object in a certain context (URL or URN). |
| − | * Title: string - Title | + | * '''Title''': string - Title |
| − | * Coverage.box: - Rectangular box (mandatory) in WGS84 | + | * '''Coverage.box''': - Rectangular box (mandatory) in WGS84 |
| − | * Coverage.name: String - (optionally) a geographic name | + | * '''Coverage.name''': String - (optionally) a geographic name |
| − | * Description: string - Some free text | + | * '''Description''': string - Some free text |
| − | * Subject: enum - Classification from ISO 19115 as enum type | + | * '''Subject''': enum - Classification from ISO 19115 as enum type |
| − | * Language: enum - ISO Code | + | * '''Language''': enum - ISO Code |
| − | * Format: string - File type or name of originating source system | + | * '''Format''': string - File type or name of originating source system |
| − | * Source: string - Lineage information | + | * '''Source''': string - Lineage information |
| − | * Date: date - Publication date or date of last change | + | * '''Date''': date - Publication date or date of last change |
| − | * Creator: string - Data owner, else: data capturer | + | * '''Creator''': string - Data owner, else: data capturer |
| − | * Publisher: string - Distribution informatione | + | * '''Publisher''': string - Distribution informatione |
| − | * Rights: string - License information about the data | + | * '''Rights''': string - License information about the data |
| − | * Contributor: string - Leave unused? | + | * '''Contributor''': string - Leave unused? |
| − | * Audience: string - Not used or 'GIS' as a constant | + | * '''Audience''': string - Not used or 'GIS' as a constant |
Attributes to discuss further (all are probably enums): Type (protocol), Identifier, Coverage.box and Coverage.name and Subject. | Attributes to discuss further (all are probably enums): Type (protocol), Identifier, Coverage.box and Coverage.name and Subject. | ||
Version vom 5. August 2006, 10:45 Uhr
Proposal of an information model to exchange spatial metadata
Initial version by S.F.Keller. See also OSGeodata.
Idea: Take the smallest possible information model for geo-metadata which describes data. Dublin Core (DC) is the most well known model.
Dublin Core and its interpretation in spatial metadata
This is the full list of (possibly repeatable) attributes from DC together with its semantic interpretation and/or enumeration list:
- Relation: reference - Reference to other metadata records - especially useful for map service types (WxS) pointing to data service types (= file, database?)
- Type: text or enum - Protocol type, e.g. file, WMS, WFS, etc... (important for service discovery)
- Identifier: string - Unique id to identify an object in a certain context (URL or URN).
- Title: string - Title
- Coverage.box: - Rectangular box (mandatory) in WGS84
- Coverage.name: String - (optionally) a geographic name
- Description: string - Some free text
- Subject: enum - Classification from ISO 19115 as enum type
- Language: enum - ISO Code
- Format: string - File type or name of originating source system
- Source: string - Lineage information
- Date: date - Publication date or date of last change
- Creator: string - Data owner, else: data capturer
- Publisher: string - Distribution informatione
- Rights: string - License information about the data
- Contributor: string - Leave unused?
- Audience: string - Not used or 'GIS' as a constant
Attributes to discuss further (all are probably enums): Type (protocol), Identifier, Coverage.box and Coverage.name and Subject.
Example in GeoRSS (simple) encoding
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