PRAGMA foreign_keys = ON;

PRAGMA writable_schema = 1;
DELETE FROM sqlite_master WHERE type IN ("table", "index", "trigger");
PRAGMA writable_schema = 0;
VACUUM;

CREATE TABLE "airlines" (
"uid" INT,
"Airline" TEXT,
PRIMARY KEY ("uid")
);

CREATE TABLE "airports" (
"AirportCode" TEXT,
"AirportName" TEXT,
PRIMARY KEY ("AirportCode")
);

CREATE TABLE "flights" (
"Airline" INT,
"FlightNo" INT,
"SourceAirport" TEXT,
"DestAirport" TEXT,
PRIMARY KEY ("Airline", "FlightNo"),
FOREIGN KEY ("SourceAirport") REFERENCES "airports"("AirportCode"),
FOREIGN KEY ("DestAirport") REFERENCES "airports"("AirportCode")
);





INSERT INTO "airlines" VALUES ("1", "SkyJet");
INSERT INTO "airlines" VALUES ("2", "CloudAir");
INSERT INTO "airlines" VALUES ("3", "FlyHigh");
INSERT INTO "airlines" VALUES ("4", "AeroWings");
INSERT INTO "airlines" VALUES ("5", "JetStream");
INSERT INTO "airports" VALUES ("JFK", "John F. Kennedy International Airport");
INSERT INTO "airports" VALUES ("LAX", "Los Angeles International Airport");
INSERT INTO "airports" VALUES ("ORD", "O'Hare International Airport");
INSERT INTO "airports" VALUES ("ATL", "Hartsfield-Jackson Atlanta International Airport");
INSERT INTO "airports" VALUES ("DFW", "Dallas/Fort Worth International Airport");
INSERT INTO "airports" VALUES ("DEN", "Denver International Airport");
INSERT INTO "airports" VALUES ("SFO", "San Francisco International Airport");
INSERT INTO "airports" VALUES ("SEA", "Seattle-Tacoma International Airport");
INSERT INTO "airports" VALUES ("MIA", "Miami International Airport");
INSERT INTO "airports" VALUES ("BOS", "Logan International Airport");
INSERT INTO "flights" VALUES ("1", "101", "JFK", "LAX");
INSERT INTO "flights" VALUES ("1", "102", "LAX", "ORD");
INSERT INTO "flights" VALUES ("1", "103", "ORD", "ATL");
INSERT INTO "flights" VALUES ("1", "104", "ATL", "DFW");
INSERT INTO "flights" VALUES ("1", "105", "DFW", "DEN");
INSERT INTO "flights" VALUES ("1", "106", "DEN", "SFO");
INSERT INTO "flights" VALUES ("1", "107", "SFO", "SEA");
INSERT INTO "flights" VALUES ("1", "108", "SEA", "MIA");
INSERT INTO "flights" VALUES ("1", "109", "MIA", "BOS");
INSERT INTO "flights" VALUES ("1", "110", "BOS", "JFK");
INSERT INTO "flights" VALUES ("2", "201", "JFK", "ORD");
INSERT INTO "flights" VALUES ("2", "202", "ORD", "DFW");
INSERT INTO "flights" VALUES ("2", "203", "DFW", "SEA");
INSERT INTO "flights" VALUES ("2", "204", "SEA", "LAX");
INSERT INTO "flights" VALUES ("2", "205", "LAX", "MIA");
INSERT INTO "flights" VALUES ("3", "301", "ATL", "JFK");
INSERT INTO "flights" VALUES ("3", "302", "JFK", "DEN");
INSERT INTO "flights" VALUES ("3", "303", "DEN", "BOS");
INSERT INTO "flights" VALUES ("4", "401", "SFO", "ATL");
INSERT INTO "flights" VALUES ("4", "402", "ATL", "SEA");
INSERT INTO "flights" VALUES ("5", "501", "MIA", "ORD");
INSERT INTO "flights" VALUES ("5", "502", "ORD", "JFK");
INSERT INTO "flights" VALUES ("5", "503", "JFK", "LAX");
INSERT INTO "flights" VALUES ("5", "504", "LAX", "SFO");
INSERT INTO "flights" VALUES ("5", "505", "SFO", "MIA");