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