Object Oriented Data Modeling
The term Complete for a UML has the same meaning as which of the following for an EER diagram?

Partial specialization rule
Total specialization rule
Overlapping rule
Disjoint rule

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Object Oriented Data Modeling
An abstract class is which of the following?

A class that has direct instances, but whose descendants may not have direct instances.
A class that has direct instances, but whose descendants may have direct instances.
A class that has no direct instances, but whose descendants may not have direct instances
A class that has no direct instances, but whose descendants may have direct instances.

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