Design an ER schema with attributes, primary keys, cardinalities and participation constraints if appropriate.
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. STATE'S Name (e.g., Texas, New York, California) and include the Region of the state (whose domain is {North-east, Midwest, South-east, Southwest, West}). Each CONGRESSPERSON in the House of Representatives is described by his or her name, plus the District represented, the StartDate, 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 BillName, the DateOfVote on the bill, whether the bill PassedOrFailed (whose domain is {Yes, No}, and the Sponsor (the congressperson(s) who sponsored-that is , proposed-the bill).
The database 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.
