1.16. Sample School Schedule Model
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## 1.16. Sample School Schedule Model

The files for this sample are located in the `samples/models/school` directory of the Kodo installation. This sample demonstrates different inheritance strategies for the same object model. The following concepts are illustrated in this sample:

- Flat Inheritance Mappings (Section 7.6.2, “Flat Inheritance Mapping”)

- State Image Version Indicator (Section 7.7.3, “State Image Indicator”)

- Vertical Inheritance Mappings (Section 7.6.3, “Vertical Inheritance Mapping”)

- Horizontal Inheritance Mappings (Section 7.6.4, “Horizontal Inheritance Mapping”)

- Value Mappings (Section 7.9.1, “Value Mapping”)

- Many to Many Mappings (Section 7.9.11, “Many-to-Many Mapping”)

The `samples/models/school` directory contains the following interfaces that represent the abstract data model:

- Address

- HomeAddress (extends Address)

- WorkAddress (extends Address)

- Person

- Parent (extends Person)

- Student (extends Person)

- Employee (extends Person)

- Teacher (extends Employee)

- Admin (extends Employee)

- Staff (extends Employee)

- Course

- ScheduledClass

Each of the `flat`, `vertical`, and `horizontal` subdirectories contain implementations of the object model that are identical except for name, and that their inheritance mapping in the `package.jdo` file uses the type of the directory's corresponding name.

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