What Metadata Is
What Metadata Is (hereinafter, the Lectio) is the lesson part of the CNM Tube Essentials lesson that introduces its participants to CNM Tube. This lesson belongs to the CNM Cyber for Competence session of the CNM Cyber Welcome Course.
Content
The predecessor lectio is Functions of CNM Tube.
Key terms
- 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.
- Timestamp. A character string or a sequence of encoded data that identifies when a certain event occurred. In information technology, a timestamp is commonly an essential part of metadata.
- 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.
Script
The successor lectio is Tube at CNM Cyber.
