The following tables form an instance of an Airport Database held in a relational DBMS: Airport (airportID, name, city, state, country) Carrier (carrierID, name, fleetSize, employees, revenue) Flight (carrierID, flightNo, date, time, airportID, destination, distance) Airnart - Each airport name is unique in its country. Carrier - Each carrier name is unique in the whole world. - Any (carrierID, flightNo) combination is unique for the whole day. B) Relational Algebra Ouestions: Using the instance of the Airport database, formulate the following queries in the relational algebra: 1. List all airport names. 2. List full details of all airports located outside the United States. Note: You should use the not equal sign = in this query. 3. List the name and the state of all United States airports. 4. List the name and the fleet size of all carriers employing more than 50000 workers. 5. List the carrier name, the carrieriD, the flightNo and the date of all flights. 6. Display the number of airports. 7. Display the number of flights with distances longer than 3000 miles. 8. Display the number of all carriers and the average of their revenues. 9. Display the number of flights leaving from JFK and the total of their distances. 10. Display the minimum, the average, and the maximum distances of the flights that are scheduled on October 17 th, 2017