EXERCISE #1: ER DESIGN - Design a database for paleontology research community. The community wants to store data about fossils preserved in museums. Fossils are characterized by: the year of the finding, the name of the researcher that found the fossil, the museum and room in which it is kept Each fossil can be associated with multiple species, with a degree of confidence/probability. Each species can be described with multiple names (researchers may disagree: use different names for the same species, or use the same name for different species): in such case, the official name is the oldest. . Each museum is characterized by rooms, researchers affiliated with it, and a director. The latter can be a paleontologist or a researcher of some other area) - The E-R schema must include cardinalities for relationships, and attributes (where applicable), and identifiers