added indexes for review and store_inventory

SQL/sql_elias.sql

@@ -90,4 +90,8 @@ CREATE CONSTRAINT TRIGGER check_exists_as_subtype
     ON product
     DEFERRABLE INITIALLY DEFERRED
     FOR EACH ROW
-EXECUTE PROCEDURE check_exists_as_subtype();
\ No newline at end of file
+EXECUTE PROCEDURE check_exists_as_subtype();
+
+CREATE INDEX ON review (customer);
+
+CREATE INDEX ON store_inventory (store_name, store_street, store_zip);
\ No newline at end of file