what is metadata ??

what is metadata ??

Metadata is data that provides information about other data.

There are two types of metadata
 i)structural metadata
 ii)descriptive metadata

 Structural metadata is data about the containers of data.

 Descriptive metadata uses individual instances of application data or the data content.

 Metadata was traditionally used in the card catalogs of libraries

 A main purpose of metadata is to facilitate in the discovery of relevant information,

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