Consider the following 3NF relations: TEAM(TeamlD, TeamName, TeamLocation) PLAYER(PlayerlD, PlayerFirstName, PlayerSpecialtyCode) SPECIALTY(SpecialtyCode. SpecialtyDescription) CONTRACT(TeamID, PlayerID, Start Time, EndTime, Salary) LOCATION(LocationID, CityName, CityState, ?ityCounty, CityPopulation) MANAGER(ManagerlD, ManagerName, ManagerTeam) LEAGUE(LeaguelD LeagueName, LeagueLocation) erl.astName. PlerDateOBirth Assume that the database is global in scope and covers thousands of leagues, tens of thousands of teams, and hundreds of thousands of players. In addition, a TEAM has an additional attribute TeamLeague, The following database operations are typical: Adding new players, adding new contracts, updating player speciality codes, updating city populations, reporting players by team, reporting players by team and specialty, reporting players ordered by salary and reporting teams and their players by city. a. Identify the foreign keys b. Specify the types of indexes your would recommend for this situation. Explain how you used the list of operations described above to arrive at your recommendation