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How do object-oriented databases represent complex objects such as vehicles?
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In object-oriented databases, all data are represented as objects. To represent complex entities like vehicles, these databases utilize two primary mechanisms:1
- Composite Objects: Objects can be linked together through an "is-part-of" relationship to form larger, composite structures. For example, a truck is represented as a composite of individual components, such as its engine, chassis, and drive train.1
- Class Hierarchies and Inheritance: Objects are organized into hierarchical classes. Within this structure, objects can inherit properties from classes higher in the hierarchy. For instance, if a "motorized vehicle" class is defined as having an engine, subclasses such as "truck" or "airplane" will automatically inherit that property.12
This approach allows for the storage and manipulation of more complex data structures compared to traditional models, offering a highly flexible and adaptable way to manage information.2