minor amends

lab-4/music-store-app/sql/schema_norm.sql

@@ -108,7 +108,7 @@ Compile wishlists from this data. */
 CREATE TABLE Wish (
 	customer_id INT,
 	album_upc INT,
-	PRIMARY KEY (customer_id, album_id),
+	PRIMARY KEY (customer_id, album_upc),
 	FOREIGN KEY (customer_id)
 		REFERENCES Customer(id)
 		ON DELETE CASCADE,
@@ -122,11 +122,11 @@ CREATE TABLE Rating (
 	customer_id INT NOT NULL,
 	album_upc CHAR(12) NOT NULL,
 	score TINYINT unsigned NOT NULL,
-	PRIMARY KEY (customer_id, album_id),
+	PRIMARY KEY (customer_id, album_upc),
 	FOREIGN KEY (customer_id)
 		REFERENCES Customer(id)
 		ON DELETE CASCADE,
 	FOREIGN KEY (album_upc)
 		REFERENCES Album (upc)
 		ON DELETE CASCADE
-);
+);
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