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" (
"City" TEXT,
"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", "United Airlines");
INSERT INTO "airlines" VALUES ("2", "Delta Airlines");
INSERT INTO "airlines" VALUES ("3", "American Airlines");
INSERT INTO "airlines" VALUES ("4", "Southwest Airlines");
INSERT INTO "airlines" VALUES ("5", "Alaska Airlines");
INSERT INTO "airlines" VALUES ("6", "JetBlue Airways");
INSERT INTO "airlines" VALUES ("7", "Spirit Airlines");
INSERT INTO "airports" VALUES ("Aberdeen", "ABR", "Aberdeen Regional Airport");
INSERT INTO "airports" VALUES ("Abilene", "ABI", "Abilene Regional Airport");
INSERT INTO "airports" VALUES ("Atlanta", "ATL", "Hartsfield-Jackson Atlanta International Airport");
INSERT INTO "airports" VALUES ("Chicago", "ORD", "O'Hare International Airport");
INSERT INTO "airports" VALUES ("Dallas", "DFW", "Dallas/Fort Worth International Airport");
INSERT INTO "airports" VALUES ("Denver", "DEN", "Denver International Airport");
INSERT INTO "airports" VALUES ("Los Angeles", "LAX", "Los Angeles International Airport");
INSERT INTO "airports" VALUES ("New York", "JFK", "John F. Kennedy International Airport");
INSERT INTO "airports" VALUES ("Seattle", "SEA", "Seattle-Tacoma International Airport");
INSERT INTO "airports" VALUES ("Houston", "IAH", "George Bush Intercontinental Airport");
INSERT INTO "airports" VALUES ("Miami", "MIA", "Miami International Airport");
INSERT INTO "flights" VALUES ("1", "101", "ATL", "ABR");
INSERT INTO "flights" VALUES ("1", "102", "ORD", "ABI");
INSERT INTO "flights" VALUES ("2", "201", "DFW", "ABR");
INSERT INTO "flights" VALUES ("2", "202", "DEN", "LAX");
INSERT INTO "flights" VALUES ("3", "301", "JFK", "ABI");
INSERT INTO "flights" VALUES ("3", "302", "SEA", "ORD");
INSERT INTO "flights" VALUES ("4", "401", "LAX", "ABR");
INSERT INTO "flights" VALUES ("4", "402", "ATL", "DFW");
INSERT INTO "flights" VALUES ("5", "501", "ORD", "ABI");
INSERT INTO "flights" VALUES ("5", "502", "DEN", "JFK");
INSERT INTO "flights" VALUES ("6", "601", "MIA", "ABR");
INSERT INTO "flights" VALUES ("6", "602", "IAH", "ABI");
INSERT INTO "flights" VALUES ("7", "701", "SEA", "LAX");
INSERT INTO "flights" VALUES ("7", "702", "JFK", "ATL");
INSERT INTO "flights" VALUES ("1", "103", "ABR", "ORD");
INSERT INTO "flights" VALUES ("2", "203", "ABI", "DFW");
INSERT INTO "flights" VALUES ("3", "303", "LAX", "ABR");
INSERT INTO "flights" VALUES ("4", "403", "ABI", "DEN");
INSERT INTO "flights" VALUES ("5", "503", "ABR", "JFK");
INSERT INTO "flights" VALUES ("6", "603", "ABI", "SEA");