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A top-to-bottom relationship among the items in a database is established by a

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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 mentioned

This 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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