classDiagram class CompanyMaster class Company class Customer class Employee class Insurance class Fleet class Base class Product class Vehicle class Order class Operator CompanyMaster <|-- Base: Aggregation CompanyMaster <|-- Product: Aggregation CompanyMaster <|-- Company: Aggregation Company <|-- Customer: Aggregation Company <|-- Employee: Aggregation Company <|-- Fleet: Aggregation Customer <|-- Insurance: Aggregation Fleet <|-- Vehicle: Aggregation Order <|-- Company: Aggregation Order <|-- Operator: Aggregation Operator <|-- Employee Order <|-- Fleet: Aggregation