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,
"Abbreviation" TEXT,
PRIMARY KEY ("uid")
);

CREATE TABLE "airports" (
"AirportCode" TEXT UNIQUE,
"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", "Southwest Airlines", "SWA");
INSERT INTO "airlines" VALUES ("2", "American Airlines", "AAL");
INSERT INTO "airlines" VALUES ("3", "Delta Air Lines", "DAL");
INSERT INTO "airlines" VALUES ("4", "United Airlines", "UAL");
INSERT INTO "airlines" VALUES ("5", "Alaska Airlines", "ASA");
INSERT INTO "airlines" VALUES ("6", "Spirit Airlines", "NKS");
INSERT INTO "airlines" VALUES ("7", "Frontier Airlines", "FFT");
INSERT INTO "airports" VALUES ("LAX", "Los Angeles International Airport");
INSERT INTO "airports" VALUES ("JFK", "John F. Kennedy International Airport");
INSERT INTO "airports" VALUES ("ORD", "OHare International Airport");
INSERT INTO "airports" VALUES ("DFW", "Dallas/Fort Worth International Airport");
INSERT INTO "airports" VALUES ("ATL", "Hartsfield-Jackson Atlanta International Airport");
INSERT INTO "airports" VALUES ("SFO", "San Francisco International Airport");
INSERT INTO "airports" VALUES ("AHD", "Ardmore Downtown Executive Airport");
INSERT INTO "airports" VALUES ("MIA", "Miami International Airport");
INSERT INTO "airports" VALUES ("DEN", "Denver International Airport");
INSERT INTO "airports" VALUES ("SEA", "Seattle-Tacoma International Airport");
INSERT INTO "flights" VALUES ("1", "100", "LAX", "AHD");
INSERT INTO "flights" VALUES ("1", "101", "SFO", "AHD");
INSERT INTO "flights" VALUES ("2", "200", "DFW", "AHD");
INSERT INTO "flights" VALUES ("3", "300", "ATL", "AHD");
INSERT INTO "flights" VALUES ("4", "400", "ORD", "JFK");
INSERT INTO "flights" VALUES ("5", "500", "SEA", "LAX");
INSERT INTO "flights" VALUES ("1", "102", "AHD", "LAX");
INSERT INTO "flights" VALUES ("2", "201", "AHD", "DFW");
INSERT INTO "flights" VALUES ("6", "600", "MIA", "DEN");
INSERT INTO "flights" VALUES ("7", "700", "JFK", "ORD");
INSERT INTO "flights" VALUES ("3", "301", "LAX", "JFK");
INSERT INTO "flights" VALUES ("4", "401", "AHD", "ORD");