Represent the following requirements with an ER diagram:
A policy-holder may have a number of policies with the insurance company. Each policy is given a policy number and relates to a single policy-holder. The company has a range of insurance products and may put together a range of products to form a policy. Examples of motor products are: third party, fire, theft, accident damage, windscreen cover, etc. Brokers sell policies for commission and any one policy may have commission payable to more than one broker. Claims are made against policies. A claim relates to only one policy and each claim is classified according to one of six claim types. The company’s products are grouped by business area, i.e. life, motor, marine, etc. Any particular product belongs to only one business area. The company holds information on clubs and associations, for promotions and selective mailings. A policy-holder may belong to a number of different associations.
(a) Produce an Entity-Relationship diagram which represents the above activities of the insurance company.
Indicate the names and degrees of all the relationships.
Give appropriate attributes for each entity shown, and identify the primary key for each entity.
(12 marks) (Total 12 marks)