Object Oriented Data Modeling An abstract class is which of the following? A class that has direct instances, but whose descendants may have direct instances. A class that has direct instances, but whose descendants may not 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. A class that has direct instances, but whose descendants may have direct instances. A class that has direct instances, but whose descendants may not 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. ANSWER DOWNLOAD EXAMIANS APP
Object Oriented Data Modeling An aggregation is a stronger form of association relationship and is represented with a solid diamond at the aggregate end. False True False True ANSWER DOWNLOAD EXAMIANS APP
Object Oriented Data Modeling Composition is a stronger form of which of the following? Aggregation Inheritance Encapsulation All of these Aggregation Inheritance Encapsulation All of these ANSWER DOWNLOAD EXAMIANS APP
Object Oriented Data Modeling A solid diamond represents a stronger form of aggregation, known as composition. True False True False ANSWER DOWNLOAD EXAMIANS APP
Object Oriented Data Modeling Each association has two or more roles. False True False True ANSWER DOWNLOAD EXAMIANS APP
Object Oriented Data Modeling Aggregation is which of the following? Expresses an is-a relationship and is a stronger form of an association relationship. Expresses an is-a relationship and is a weaker form of an association relationship. Expresses a part-of relationship and is a stronger form of an association relationship. Expresses a part-of relationship and is a weaker form of an association relationship. Expresses an is-a relationship and is a stronger form of an association relationship. Expresses an is-a relationship and is a weaker form of an association relationship. Expresses a part-of relationship and is a stronger form of an association relationship. Expresses a part-of relationship and is a weaker form of an association relationship. ANSWER DOWNLOAD EXAMIANS APP
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