3. Design a genealogy database that includes one entity set only, called People. The database should contain all the information that exists about each individual, including their names, and their mother, father, and children's names. (a) [9 Points] Present your conceptual database design as an E/R diagram. (b) [6 Points ] Following an E/R style, convert your E/R diagram into a relational database schema and show the result. 4. [15 Points] Modify your design of the database People in the previous question to include additional information about "types of people such as Females, Males, and being parents, etc. Use subclasses of people to present the "types" of people