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The traditional storage of data that is organized by customer, stored in separate folders in filing cabinets is an example of what type of ‘database’ system?

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The traditional storage of data that is organized by customer, stored in separate folders in filing cabinets is an example of what type of ‘database’ system? (a) Hierarchical (b) Network (c) Object oriented (d) Relational I have been asked this question in a job interview. My question is based upon Ordered Indexing and Hashing in portion Indexing and Hashing of Database Management Select the correct answer from above options Interview Questions and Answers, Database Interview Questions and Answers for Freshers and Experience

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Correct answer is (a) Hierarchical The best I can explain: Hierarchy is based on Parent-Child Relationship. Parent-Child Relationship Type is basically 1:N relationship.

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