最佳实践firebase数据结构

Question

您好我刚刚使用firebase和AngularFire，并且有关于数据库结构和查询的最佳实践的基本问题。

我有一个带有用户登录的应用程序，每个用户都可以创建和存储报告，因此我正在考虑如何在firebase中构建数据结构的两种方法：

首先：

{
  "reports" : {
    "userid_1" : {
      "reportid_1" : {
        "reportTitle" : "some title",
        "reportMsg" : "some text"
      },
      "reportid_2" : {
        "reportTitle" : "some title",
        "reportMsg" : "some text"
      },
      "reportid_3" : {
        "reportTitle" : "some title",
        "reportMsg" : "some text"
      }

    },
    "userid_2" : {
      "reportid_1" : {
        "reportTitle" : "some title",
        "reportMsg" : "some text"
      },
      "reportid_2" : {
        "reportTitle" : "some title",
        "reportMsg" : "some text"
      },
      "reportid_3" : {
        "reportTitle" : "some title",
        "reportMsg" : "some text"
      }

    }
  }
}

然后我可以这样查询：

var ref_reports = new Firebase("https://xxxxx.firebaseio.com/reports/"+userid+"/");

第二

{
  "reports": {
    "report_id_1": {
      "userid": "userid_1",
      "reportdata": {
        "reportTitle": "some title",
        "reportMsg": "some text"
      }
    },
    "report_id_2": {
      "userid": "userid_2",
      "reportdata": {
        "reportTitle": "some title",
        "reportMsg": "some text"
      }
    },
    "report_id_3": {
      "userid": "userid_1",
      "reportdata": {
        "reportTitle": "some title",
        "reportMsg": "some text"
      }
    }
  }
}

然后通过userid进行查询和过滤数据：

var ref_reports = new Firebase("https://xxxxx.firebaseio.com/reports/");

那么过滤收到的firebase数组是否更好？或者更好地使用referenz过滤数据？

由于