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Explain the differences between structured data and unstructured data.
Structured data are facts concerning objects and events. The most significant structured data are numeric, character, and dates. Structured data are kept in tabular form. Unstructured data are multimedia data like documents, photographs, maps, images, sound, and video clips. Unstructured data are most usually found on Web servers and Web-enabled databases.
Which component is not included in database environment ? A users component is not included in database environment.
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What is it ?
What are the reasons for having variable length records? What are the various ways to store variable length records? Variable-length records arise in a database in various wa
A database administrator''s responsibilities and data contents
Mappings between Levels and Data Independence The 3 levels of abstraction in the database do not exist separately of each other. There must be some correspondence, or mapping
What are the function of DBA?
how to find entities
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