Explain the difference between a weak and strong entity set

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Reference no: EM131876197

Problem

1. Explain the difference between a weak and a strong entity set.

2. We can convert any weak entity set to a strong entity set by simply adding appropriate attributes. Why, then, do we have weak entity sets?

3. Define the concept of aggregation. Give two examples of where this concept is useful.

Reference no: EM131876197

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