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 "car_makers" (
"Id" INT,
"Maker" TEXT,
PRIMARY KEY ("Id")
);

CREATE TABLE "car_names" (
"MakeId" INT UNIQUE,
"Model" TEXT,
PRIMARY KEY ("MakeId"),
FOREIGN KEY ("Model") REFERENCES "model_list"("Model")
);

CREATE TABLE "cars_data" (
"Id" INT,
"Weight" INT,
PRIMARY KEY ("Id"),
FOREIGN KEY ("Id") REFERENCES "car_names"("MakeId")
);

CREATE TABLE "model_list" (
"ModelId" INT,
"Maker" INT,
"Model" TEXT UNIQUE,
PRIMARY KEY ("ModelId"),
FOREIGN KEY ("Maker") REFERENCES "car_makers"("Id")
);





INSERT INTO "car_makers" VALUES ("1", "Toyota");
INSERT INTO "car_makers" VALUES ("2", "Honda");
INSERT INTO "car_makers" VALUES ("3", "Ford");
INSERT INTO "car_makers" VALUES ("4", "BMW");
INSERT INTO "car_makers" VALUES ("5", "Audi");
INSERT INTO "model_list" VALUES ("101", "1", "Corolla");
INSERT INTO "model_list" VALUES ("102", "1", "Camry");
INSERT INTO "model_list" VALUES ("103", "2", "Civic");
INSERT INTO "model_list" VALUES ("104", "2", "Accord");
INSERT INTO "model_list" VALUES ("105", "3", "Focus");
INSERT INTO "model_list" VALUES ("106", "3", "Mustang");
INSERT INTO "model_list" VALUES ("107", "4", "X3");
INSERT INTO "model_list" VALUES ("108", "4", "X5");
INSERT INTO "model_list" VALUES ("109", "5", "A4");
INSERT INTO "model_list" VALUES ("110", "5", "A6");
INSERT INTO "car_names" VALUES ("1", "Corolla");
INSERT INTO "car_names" VALUES ("2", "Civic");
INSERT INTO "car_names" VALUES ("3", "Mustang");
INSERT INTO "car_names" VALUES ("4", "X5");
INSERT INTO "car_names" VALUES ("5", "A4");
INSERT INTO "cars_data" VALUES ("1", "2800");
INSERT INTO "cars_data" VALUES ("2", "2700");
INSERT INTO "cars_data" VALUES ("3", "3500");
INSERT INTO "cars_data" VALUES ("4", "4500");
INSERT INTO "cars_data" VALUES ("5", "3900");