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A top-to-bottom relationship among the items in a database is established by a(a) Hierarchical schema(b) Network schema(c) Relational schema(d) All of the mentionedThis question was addressed to me in an online quiz.This is a very interesting question from File Organisations in portion Storage and File Structures of Database Management

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Correct option is (a) Hierarchical schema

Easy explanation - A hierarchical DATABASE model is a DATA model in which the data is organized into a tree-like structure. The structure allows REPRESENTING INFORMATION using parent/child relationships.



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