Chapter 12 – Composite (Nested) Types Example

In this example, each Student object contains two nested components: an address part and a contact part. The left side shows a flat, relational-style view, while the right side highlights the composite structure used inside the object.

Select student:

Relational-style View

StudentNo

FirstName

LastName

City

District

PostalCode

Mobile

Object-Oriented View (Composite Types)

student.id student.getFullName() student.address (city, district, postalCode) student.contact (email, mobile) Derived value: student.contactDomain()