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What is the significance of metadata?

Answer»

Metadata is the INFORMATION about data that tells what data KIND is stored in the system, what is the PURPOSE and to whom it is intended. There are different types of metadata depending on the purpose, they are:

  • Technical Metadata – This type DEFINES names of the database system and tables, size of tables, values, attributes, data types etc. It also INCLUDES constraint information like primary keys, foreign keys, indexes etc.
  • Business Metadata – This data is specific to business and defines the data ownership, business regulations and rules, policies etc.
  • Descriptive Metadata – This type of data gives information about folder, file, image, book or video. Information can be title, date, size, author, published on etc.
  • Operational Metadata – This type includes information related to any business operation and is used by managers or executives for performing any task.


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