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6) Consider the following relations for a database that keeps track of business trips of salespersons in a sales office: (8 pts.) SALESPERSON (SSN, Name,

6) Consider the following relations for a database that keeps track of business trips of salespersons in a sales office: (8 pts.) SALESPERSON (SSN, Name, Start_Year, Dept_No) TRIP (SSN, From_City, To_City, Departure_Date, Return_Date, Trip ID) EXPENSE Trip ID, Account#, Amount) Specify 4 foreign keys for this schema, stating any assumptions you make

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