Available under Creative Commons-ShareAlike 4.0 International License.
The term metadata can be understood as “data about data.” For example, when looking at one of the values of Year of Birth in the Students table, the data itself may be “1992″. The metadata about that value would be the field name Year of Birth, the time it was last updated, and the data type (integer). Another example of metadata could be for an MP3 music file, like the one shown in the image below; information such as the length of the song, the artist, the album, the file size, and even the album cover art, are classified as metadata. When a database is being designed, a “data dictionary” is created to hold the metadata, defining the fields and structure of the database.
- 895 reads
