Design an ER and Relational schema for keeping track of information about votes taken in the U.S. House of Representatives during the current two-year congressional session. The database needs to keep track of each U.S. STATEs Name (e.g., Texas, New York, California) and include the Region of the state (whose domain is {Northeast, Midwest, Southeast, Southwest, West}). Each CONGRESS_PERSON in the House of Representatives is described by his or her Name, plus the District represented, the Start_date when the congressperson was first elected, and the political Party to which he or she belongs (whose domain is {Republican, Democrat, Independent, Other}). The database keeps track of each BILL (i.e., proposed law), including the Bill_name, the Date_of_vote on the bill, whether the bill Passed_or_failed (whose domain is {Yes, No}), and the Sponsor (the congressperson(s) who sponsoredthat is, proposedthe bill). The database also keeps track of how each congressperson voted on each bill (domain of Vote attribute is {Yes, No, Abstain, Absent}). Draw an ER schema diagram for this application. State clearly any assumptions you make.

Draw an EER and Relational Schema Model diagrams for the case study above. (If you believe that you need to make additional assumptions, clearly state them for each situation.)