In 100-150 words answer the following questions:1. Use an example to explain the difference between a logical process models and physical process models.2. A wealthy businessman owns a large number of paintings that he loans to museums all over the world. He is interested in setting up a system that records what he loans to whom so that he does not lose track of his investments. He would like to keep information about the paintings that he owns as well as the artists who painted them. He also wants to track the various museums that reserve his art, along with the actual reservations. Obviously, artists are associated with paintings, paintings are associated with reservations, and reservations are associated with museums.a. Which four entities would belong on this data model? b. Which are some of the basic attributes for each entity?3. Describe how Joint Application Design (JAD) might be considered a better information-gathering technique than the traditional method of requirements gathering? What are its shortcomings?