If I use to manage checkboxes, how does it get stored in the database?

In my form bean I have the getter & setter as follows:

			

			private String[] selectedItems = {};
			

			private String[] items = {"UPS","FedEx","Airborne"};
			

			public String[] getSelectedItems() {
			

			return this.selectedItems;
			

			}
			

			public void setSelectedItems(String[] selectedItems) {
			

			this.selectedItems = selectedItems;
			

			}