雖然我們使用firebase可以幫我們做到後端大部分的事情，但還是需要規劃資料結構，為什麼標題會有個ver.1，那表示這個版本不是最終版本，之後有發生寫到一半改結構的慘事...
初期我們雖然有畫出手繪的ER圖，但實在不知道怎麼把這圖對應到firebase上，此時有人建議我們用巢狀陣列的方式，試著寫寫看覺得滿合理的啊～就決定採用這個結構

{
  "stores": { //店家資訊
    "-L05fjkdfjkdjfa": { 
      "storeID": "1",
      "storeName": "XX便當",
      "phone": "04-1234567",
      "address": "台中市台灣大道2段xX號",
      "openTime": "09:00",
      "closeTime": "20:00",
      "deliveryCondition": "訂三個便當以上",
      "storeType": "中式",
      "menuImage": "img/XX便當.jpg"
    }
  },
  "dishes": { //菜單
    "-L05fnvmcvmz;": { 
      "dishID": "1",
      "dishName": "排骨便當",
      "storeID": "1",
      "price": "30"
    }
  },
  "orders": { //團訂資訊
    "-L05anvmctuirpwool": { 
      "orderID": "001",
      "orderEndTime": "2017/12/13-10:30:00",
      "storeID": "1",
      "total": 500,
      "active": true,
      "members": [
        {
          "userID": "user1",
          "name": "Clover",
          "order": [
            {
              "dishID": "1",
              "count": "1",
              "subtotal": 30
            },
            {
              "dishID": "2",
              "count": "10",
              "subtotal": 30
            }
          ],
          "userTotal": 60
        }
      ]
    }
  }
}