Discuss the relationship between database design ND the three levels ANSI APARC Architecture
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In 1971, DBTG(DataBase Task Group) realized the requirement for a two-level approach having views and schema and afterward, in 1975, ANSI-SPARC realized the need for a three-level approach with the three levels of abstraction comprises of an external, a conceptual, and an internal level.
The three-level architecture aims to separate each user’s view of the database from the way the database is physically represented.
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