About
Metadata are data about data. They are data that describes other data.
Metadata is also known as:
- Descriptor.
- Ancillary data
Metadata is information stored in the data dictionary about components of the data model.
In the SQL specification, they write that the descriptor of an object represents everything that needs to be known about the object.
By adding metadata to your resource, you create a graph object
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Example
The prototypical example of metadata is the library catalog, which is a description of the contents of books.
Protocol
- on the internet, see protocol
Format
- Dataset Publishing Language DSPL is a data and metadata format designed from the ground up to support interactive visualizations like those in the Google Public Data Explorer.
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- Resources Description (ie file/locator): https://frictionlessdata.io/specs/data-resource/
- Example: https://github.com/datasets
- Implementation: https://frictionlessdata.io/specs/implementation/
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This format are used in the distribution of data set
Logical
- Oracle Metadata use MIMB
Documentation / Reference
- wiki/metadata for each page.