static void Main(string[] args)
        {
            DBEngine <int, DBElement <int, string> > db = new DBEngine <int, DBElement <int, string> >();
            ItemFactory <int, string> itemFactory       = new ItemFactory <int, string>();

            "Demonstrating Requirement #2".title();
            DBElement <int, string> elem = itemFactory.Create();

            elem.name      = "element";
            elem.descr     = "test element";
            elem.timeStamp = DateTime.Now.AddDays(-4);
            elem.children.AddRange(new List <int> {
                1, 2, 3
            });
            elem.payload = "elem's payload";
            WriteLine("\n Item to be inserted.. \n");
            elem.showElement();
            db.insert(1, elem);
            db.showDB();
            WriteLine();

            WriteLine("\n Inserting second element into DB :");
            DBElement <int, string> elem2 = new DBElement <int, string>();

            elem2.name      = "element2";
            elem2.descr     = "test element2";
            elem2.timeStamp = DateTime.Now;
            elem2.children.AddRange(new List <int> {
                1, 2, 3, 4
            });
            elem2.payload = "elem2's payload";
            WriteLine("\nItem to be inserted.. \n");
            elem2.showElement();
            db.insert(2, elem2);
            WriteLine("\n\n DB after insertion:");
            db.showDB();
            "Adding relationship :".title('.');
            WriteLine("\n Elements in DB :");
            db.showDB();
            int key      = 2;
            var children = new List <int> {
                5, 6
            };

            WriteLine("\n Add children for key {0} : ", key);
            foreach (var child in children)
            {
                Write("{0}, ", child);
            }
            WriteLine();
            db.addRelationship(key, children);
            WriteLine("\n\n DB after the change :");
            db.showDB();
            WriteLine();
            "".demarcation();
            ItemEditorTest editorTest = new ItemEditorTest();

            editorTest.test();
        }