prototype/src/main/java/org/hso/ecommerce/entities/shop/Article.java

@@ -35,7 +35,7 @@ public class Article {
     @Basic(fetch = FetchType.LAZY)
     public Image image;
 
-    @ManyToMany
+    @ManyToMany(cascade = CascadeType.ALL)
     @JoinTable(name = "article_categories_bindings")
     public Set<Category> categories = new HashSet<>();