Create Entity-Relationship (E-R) model for the internal view of gym membership system including all
workers and organization units affected by processing gym memberships. When members join the gym,
they pay a fee for a certain length of time. Most memberships are for one year, but memberships as
short as two months are available. Throughout the year, the gym offers a variety of discounts on their
regular membership prices (e.g., two memberships for the price of one for Valentine's day). It is
common for members to pay different amounts for the same length of membership. The gym wants to
mail out reminder letters to members asking them to renew their memberships one month before their
memberships expire. Some members have become angry when asked to renew at a much higher rate
than their original membership contract, so the club wants to track the prices paid so that the manager
can override the regular prices with special prices when members are asked to renew. The system must
track these new prices so that renewals can be processed accurately. One of the problems in the
industry is the high turnover rate of members. Although some members remain active for many years,
about half of the members do not renew their memberships. This is a major problem because the gym
spends a Jot in advertising to attract each new member. The manager wants the system to track each
time a member comes into the gym. The system will then identify the heavy users and generate a report
so the manager can ask them to renew their memberships early, perhaps offering them a reduced rate
for early renewal. Likewise, the system should identify members who have not visited the gym in more
than a month, so the manager can call them and attempt to reinterest them in the gym.