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Background for Students
Andruid Kerne edited this page May 29, 2014
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Metadata means data about data. Suppose you had a library of music as a data set. The songs themselves would be considered data. For each and every song, information such as title, artist, album, genre and duration would be considered metadata, because they are data about data (i.e. the songs in this case). Each individual piece of information, such as the title, is often referred to as a property or a field.
Metadata is also referred to as 'semantic data' or 'semantics' in different contexts.
- XML: A basic understanding of XML is needed because meta-metadata is an XML based language. If needed please see an XML tutorial.
- XPath: The ability to form XPath expressions is necessary. These expressions are heavily used to retrieve data from HTML pages. XPath tutorial.
- Regular Expression: Regular expression are used often in meta-metadata for specifying either URLs or parts of text. Regex tutorial.
- S.IM.PL: For a deeper understanding of how Meta-Metadata works, it might be helpful to understand some of the core concepts behind S.IM.PL.