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| | |Sources=http://www.merriam-webster.com/dictionary/metadata, http://marciazeng.slis.kent.edu/metadatabasics/types.htm, https://en.wikipedia.org/wiki/Metadata#Definition | | |Sources=http://www.merriam-webster.com/dictionary/metadata, http://marciazeng.slis.kent.edu/metadatabasics/types.htm, https://en.wikipedia.org/wiki/Metadata#Definition |
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| | == Metadata in oedb == | | == Metadata in oedb == |
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| | Different concepts for metadata were compared, harmonized and simplyfied: | | Different concepts for metadata were compared, harmonized and simplyfied: |
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| − | *[[:File:http://frictionlessdata.io/guides/data-package/#getting-started|OKFN (Frictionless / Data Package)]] | + | *[http://frictionlessdata.io/guides/data-package/#getting-started OKFN (Frictionless / Data Package)] |
| − | *[[:File:https://github.com/fraunhoferfokus/ogd-metadata/blob/master/OGPD JSON Schema.html|CKAN (Frauenhofer)]] | + | *[https://github.com/fraunhoferfokus/ogd-metadata/blob/master/OGPD_JSON_Schema.html CKAN (Frauenhofer)] |
| − | *[[:File:http://data.open-power-system-data.org/renewable power plants/2016-10-21/datapackage.json|OPSD]] | + | *[http://data.open-power-system-data.org/renewable_power_plants/2016-10-21/datapackage.json OPSD] |
| − | *[[:File:http://www.geodaten.niedersachsen.de/download/26294/|INSPIRE]] | + | *[http://inspire.ec.europa.eu/documents/Metadata/INSPIRE_MD_IR_and_ISO_v1_2_20100616.pdf INSPIRE] |
Revision as of 12:44, 23 November 2016
Definition
1. Metadata is data (information) that provides information about other data.
2. Three distinct types of metadata exist: structural metadata, descriptive metadata, and administrative metadata.
3. Metadata means "data about data". Although the "meta" prefix (from the Greek preposition and prefix μετά-) means "after" or "beyond", it is used to mean "about" in epistemology. Metadata is defined as the data providing information about one or more aspects of the data; it is used to summarize basic information about data which can make tracking and working with specific data easier. Some examples include: Means of creation of the data, Purpose of the data, Time and date of creation, Creator or author of the data, Location on a computer network where the data was created, Standards used, File size
Abbreviation
Synonyms
Superterms
Subterms
Sources
http://www.merriam-webster.com/dictionary/metadata, http://marciazeng.slis.kent.edu/metadatabasics/types.htm, https://en.wikipedia.org/wiki/Metadata#Definition
Metadata in oedb
In the oedb, the metadata is stored in a comment as a JSON string.
The SQL example is on GitHub.
Different concepts for metadata were compared, harmonized and simplyfied:
