What Metadata Is

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!What Metadata Is |3||metadata, metadata tag

CNM Tube Essentials

Metadata. Data about other data. Since data is usually presented by a document, metadata can be defined as a document that presents data about another document. For instance, when one uploads a multimedia file up to a file-sharing system, this system issues a system document that presents data from what user account the file is uploaded, its timestamp (when it is uploaded), what is its size, what is its title, category, and other tags that the uploading user and/or the system assigned to this file, etc.
  • Metadata tag. A keyword, term, or phrase that a data owner assigns to the data. In information technology, the data is presented by a computer file or another document, so the tag enables keyword-based classification and used to categorize the content of that file or another document.