a) Consider the following relations for a database that keeps track of business trips of
salespersons in a sales office:
SALESPERSON (SSN, Name, start_year, Dept_no)
TRIP (SSN, From_city, To_city, Departure_Date, Return_Date, Trip_ID)
EXPENSE(TripID, Account#, Amount)
Specify the following queries in relational algebra:
(i) Give the details (all attributes of TRIP) for trips that exceeded $2000 in expenses. [6]
(ii) Print the SSN of salesman who took trips to ‘Honolulu.’ [6]
Answers
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Posted 14 Sep 2017 10:09 PM
My Price 6.00
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