There are many different types of people who work in a a database system environment. This includes "actors on the scene", the ones whose jobs involve the day- to-day use of a large database. Some examples would be DBAs and database designers. The other category is the "workers behind the scene" who are more interested in the components of the DBMS software and system environment. Use your lecture notes, additional readings, and research to answer the following questions: (1) Compare and contrast the two different user categories. What's their biggest difference? (2) What are the responsibilities of the DBA and the DBMS system designers and implementers? (3) [OPTIONAL: 10 bonus points] Research and describe one additional "actor" and "worker" for the above mentioned categories that have not been introduced in class