RDBMS schema error (int/char)

P/Sda1/catalog2rdbms/Schema/schema.sql

@@ -8,7 +8,7 @@ CREATE TABLE Product (
 );
 
 CREATE TABLE Description (
-   product CHAR(20) NOT NULL REFERENCES Product
+   product INTEGER NOT NULL REFERENCES Product
   ,orderIndex int NOT NULL   -- preserving the order of descriptions belonging to a given product
   ,text VARCHAR(255) NOT NULL
   ,UNIQUE(product, orderIndex)
@@ -17,11 +17,11 @@ CREATE TABLE Description (
 -- example data corresponding to products.xml --
 
 -- Product lacking age property --
-INSERT INTO Product (id, name) VALUES ('mpt', 'Monkey Picked Tea');
-INSERT INTO Description VALUES('mpt', 0, 'Picked only by specially trained monkeys');
-INSERT INTO Description VALUES('mpt', 1, 'Rare wild Chinese tea');
+INSERT INTO Product (id, name) VALUES (1, 'Monkey Picked Tea');
+INSERT INTO Description VALUES(1, 1, 'Picked only by specially trained monkeys');
+INSERT INTO Description VALUES(1, 2, 'Rare wild Chinese tea');
 
-INSERT INTO Product VALUES ('instantTent', '4-Person Instant Tent', 15);
-INSERT INTO Description VALUES('instantTent', 0, 'Exclusive WeatherTec system.');
-INSERT INTO Description VALUES('instantTent', 1, '4-person, 1-room tent');
-INSERT INTO Description VALUES('instantTent', 2, 'Pre-attached tent poles');
+INSERT INTO Product VALUES (2, '4-Person Instant Tent', 15);
+INSERT INTO Description VALUES(2, 0, 'Exclusive WeatherTec system.');
+INSERT INTO Description VALUES(2, 1, '4-person, 1-room tent');
+INSERT INTO Description VALUES(2, 2, 'Pre-attached tent poles');