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    Hierarchical database

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    Demonstrate your understanding of a hierarchical database, network database, relational database, and object-oriented database

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    Hierarchical Database:
    A hierarchical data model is a data model in which the data is organized into a tree-like structure. The structure allows repeating information using parent/child relationships: each parent can have many children but each child only has one parent. All attributes of a specific record are listed under an entity type. In a database, an entity type is the equivalent of a table; each individual record is represented as a row and an attribute as a column. Entity types are related to each other using 1: N mapping, also known as one-to-many relationships. The most recognized example of hierarchical model database is an IMS designed by IBM.

    Network Database:
    The network model is a database model conceived as a flexible way of representing objects and their relationships. ...

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