Knowra Metadata Metadata Metadata is information that describes, structures, or provides context for other data, including its source, format, creation date, and relationships.
Data : Recorded information represented in a form suitable for processing, interpretation, or communication. Metadata takes data as its subject and helps make it interpretable.
Dublin Core : A set of fifteen core elements for describing resources, including title, creator, subject, and date. It offers a widely used, lightweight vocabulary for resource description.
Metadata schema : A specification defining metadata elements, their meanings, and rules for their use. Schemas establish which descriptive fields a system can store and exchange.
Data versus metadata : The distinction between information being described and information that describes or contextualizes it. The same content can function as data in one context and metadata in another.
Data model : A formal description of how data is structured, related, and constrained. Data models define structures that metadata can describe or encode.
EXIF : A standard for storing image data and capture details in files produced by digital cameras and phones. Its fields record photographic metadata such as exposure settings and capture time.
Resource Description Framework : A W3C model for expressing data as relationships among resources, properties, and values. RDF represents metadata as linked statements that systems can combine.
Data quality : The degree to which data is accurate, complete, consistent, timely, and fit for use. Descriptive metadata can reveal data quality, but does not ensure it.
Ontology : A formal representation of concepts, properties, and relationships within a domain. Ontologies provide shared concepts for describing data consistently.
Schema.org : A vocabulary for structured data on web pages, maintained by a collaborative community. It makes metadata about products, events, organizations, and other entities machine-readable on the web.
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