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 "singer" (
"Singer_ID" INT,
"Birth_Year" FLOAT,
"Citizenship" TEXT,
PRIMARY KEY ("Singer_ID")
);

CREATE TABLE "song" (
"Song_ID" INT,
"Sales" FLOAT,
"Highest_Position" FLOAT,
PRIMARY KEY ("Song_ID")
);





INSERT INTO "singer" VALUES ("1", "1985", "United States");
INSERT INTO "singer" VALUES ("2", "1990", "United Kingdom");
INSERT INTO "singer" VALUES ("3", "1975", "Canada");
INSERT INTO "singer" VALUES ("4", "2000", "Australia");
INSERT INTO "singer" VALUES ("5", "1960", "France");
INSERT INTO "singer" VALUES ("6", "1988", "Brazil");
INSERT INTO "singer" VALUES ("7", "1995", "South Korea");
INSERT INTO "singer" VALUES ("8", "1982", "Germany");
INSERT INTO "singer" VALUES ("9", "1970", "Japan");
INSERT INTO "singer" VALUES ("10", "2003", "Nigeria");
INSERT INTO "song" VALUES ("1", "5000000", "1");
INSERT INTO "song" VALUES ("2", "3000000", "5");
INSERT INTO "song" VALUES ("3", "10000000", "2");
INSERT INTO "song" VALUES ("4", "750000", "20");
INSERT INTO "song" VALUES ("5", "2000000", "10");
INSERT INTO "song" VALUES ("6", "1500000", "15");
INSERT INTO "song" VALUES ("7", "9000000", "3");
INSERT INTO "song" VALUES ("8", "400000", "50");
INSERT INTO "song" VALUES ("9", "1200000", "25");
INSERT INTO "song" VALUES ("10", "600000", "30");