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 "concert" (
"concert_ID" INT,
"Year" TEXT,
PRIMARY KEY ("concert_ID")
);

CREATE TABLE "singer" (
"Singer_ID" INT,
"Country" TEXT,
"Song_release_year" TEXT,
"Age" INT,
PRIMARY KEY ("Singer_ID")
);

CREATE TABLE "stadium" (
"Stadium_ID" INT,
"Location" TEXT,
PRIMARY KEY ("Stadium_ID")
);





INSERT INTO "concert" VALUES ("1", "2010");
INSERT INTO "concert" VALUES ("2", "2011");
INSERT INTO "concert" VALUES ("3", "2012");
INSERT INTO "concert" VALUES ("4", "2013");
INSERT INTO "concert" VALUES ("5", "2014");
INSERT INTO "concert" VALUES ("6", "2015");
INSERT INTO "singer" VALUES ("1", "United States", "2009", "25");
INSERT INTO "singer" VALUES ("2", "France", "2010", "19");
INSERT INTO "singer" VALUES ("3", "United Kingdom", "2011", "30");
INSERT INTO "singer" VALUES ("4", "Germany", "2012", "22");
INSERT INTO "singer" VALUES ("5", "Canada", "2013", "20");
INSERT INTO "singer" VALUES ("6", "Australia", "2014", "21");
INSERT INTO "singer" VALUES ("7", "Brazil", "2015", "18");
INSERT INTO "singer" VALUES ("8", "Japan", "2016", "40");
INSERT INTO "singer" VALUES ("9", "South Korea", "2017", "17");
INSERT INTO "singer" VALUES ("10", "Italy", "2018", "23");
INSERT INTO "stadium" VALUES ("1", "New York");
INSERT INTO "stadium" VALUES ("2", "Paris");
INSERT INTO "stadium" VALUES ("3", "London");
INSERT INTO "stadium" VALUES ("4", "Berlin");
INSERT INTO "stadium" VALUES ("5", "Toronto");
INSERT INTO "stadium" VALUES ("6", "Sydney");
INSERT INTO "stadium" VALUES ("7", "Rio de Janeiro");
INSERT INTO "stadium" VALUES ("8", "Tokyo");
INSERT INTO "stadium" VALUES ("9", "Seoul");
INSERT INTO "stadium" VALUES ("10", "Rome");