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Question: represent the following using the constructs of the entityrelationship model...

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Represent the following, using the constructs of the EntityRelationship model.

1.    In a zoological garden there are animals belonging to a species and having a certain age; each species is situated in a sector (having a name) of the zoo.

1.    An automobile rental firm has a vehicle pool, in which each automobile has a registration number and a colour and belongs to one category; for each category, there is a rental tariff.

2.    A company produces CDs with a code and a title; each cd has been recorded by one or more singers, each of whom has a name and an address and some of whom have a stage name.

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