Explain the hierarchical database model, Database Management System

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Problem:

(a) Briefly explain the ‘Hierarchical Database Model' using appropriate diagram.

(b) List and briefly describe five potential benefits of the database approach compared to conventional file systems.

(c) To address the issue of data independence, the SPARC/ANSI three level architecture was proposed. Compare and contrast the three levels of the model.

(d) Explain briefly the parts of the Relational Model.

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