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Give an example of a three-level \"Is-A\" hierarchy and a three-level \"Has-A\" hierarchy other than the...

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Programming

Give an example of a three-level \"Is-A\" hierarchy and a three-level\"Has-A\" hierarchy other than the ones discussed in the lecture.



Just provide as many examples as you can,
thank you

Answer & Explanation Solved by verified expert
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In hierarchical model data is organized into atree like structure with each record is having one parent recordand many children The main drawback of this model is that    See Answer
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