Inheritance or Composition

• If the relationship is of 'is a' type then inheritance

• If the relationship is of 'has a' type then composition.

• 'Slant6 has a Engine' is wrong relationship.

• 'Slant6 is a Engine' so Inheritance.

• 'Car is a Engine' wrong relationship.

• 'Car has a Engine' so Composition

• 'Car has a AllWeatherRadial' so Composition