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", "USA");
INSERT INTO "singer" VALUES ("2", "1990", "Canada");
INSERT INTO "singer" VALUES ("3", "1975", "UK");
INSERT INTO "singer" VALUES ("4", "2000", "Australia");
INSERT INTO "singer" VALUES ("5", "1960", "France");
INSERT INTO "singer" VALUES ("6", "1988", "USA/Canada");
INSERT INTO "singer" VALUES ("7", "NULL", "Germany");
INSERT INTO "singer" VALUES ("8", "1945", "Italy");
INSERT INTO "singer" VALUES ("9", "2010", "Brazil");
INSERT INTO "singer" VALUES ("10", "1995", "Japan");
INSERT INTO "singer" VALUES ("11", "1982", "South Korea");
INSERT INTO "singer" VALUES ("12", "1970", "Mexico");
INSERT INTO "singer" VALUES ("13", "2005", "Nigeria");
INSERT INTO "singer" VALUES ("14", "1999", "India");
INSERT INTO "singer" VALUES ("15", "1980", "Russia");