State True/False
| 1. | Subclasses are the sub-grouping of occurrences of entities in an entity type that shares common attributes or relationships distinct from other sub-groupings. |
| 2. | In case of supertype, objects in one set are grouped or subdivided into one or more classes in many systems. |
| 3. | Superclass is a generic entity type that has a relationship with one or more subtypes. |
| 4. | Each member of the subclass is also a member of the superclass. |
| 5. | The relationship between a superclass and a subclasses is a one-to-many (1:N) relationship. |
| 6. | The U-shaped symbols in ERR model indicates that the supertype is a subset of the subtype. |
| 7. | Attribute inheritance is the property by which supertype entities inherit values of all attributes of the subtype. |
| 8. ... |
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