Final answer:
Hierarchical, network, and relational databases vary in their structure and relationship representation.
Explanation:
Hierarchical database: In a hierarchical database model, data is organized in a tree-like structure where each record type has a parent-child relationship. This model is suitable for representing data with one-to-many relationships, such as organizational charts or family trees.
Network database: Network databases allow more complex relationships, including many-to-many connections. They offer greater flexibility in querying the dataset compared to hierarchical databases.
Relational database: Relational databases utilize tables, primary keys, and foreign keys to establish relationships between data. They follow normalization forms to reduce redundancy and ensure data integrity.
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