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What is the initial step for object-oriented designing
The initial step for object-oriented designing is object modeling. Before we go into deep about object modeling first of all we should know "what is the object modeling"? We can say that Object modeling identifies objects and classes in problem domain and identifies the relationship among objects.
Define the terms entity, attribute, role and relationship between the entities, giving examples for each of them. Ans: Entity: An entity is a "thing" or "object" in th
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Explain Alternate key? Alternate Key - All the candidate keys except primary key are known as alternate keys.
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a set of possible data value of an attribute is called??
#question benefits and limitations of data models..
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