MongoDB数据库关系答案

【问题标题】：MongoDB database relationshipsMongoDB数据库关系
【发布时间】：2014-10-03 21:24:56
【问题描述】：

我刚刚开始在 MongoDB 中构建数据库。我有 2 个表格，Teams 和 Fixtures，每个 Fixture 文档应该有 2 个指向 Fixtures 表格的链接，一个 HomeTeamId 和一个 AwayTeamId。这是正确的做法吗？

团队：

{
    "_id": {
        "$oid": "542978c4e4b0e67da1edc7f3"
    },
    "TeamName": "Arsenal",
    "BadgeSmall": "http://footballcomps.azurewebsites.net/Content/Images/Badges/Small/arsenal.png",
    "BadgeLarge": "http://footballcomps.azurewebsites.net/Content/Images/Badges/Large/arsenal.png",
    "TeamImage": "http://footballcomps.azurewebsites.net/Content/Images/Teams/arsenal.png",
    "Formation": "http://footballcomps.azurewebsites.net/Content/Images/Formations/arsenal.png"
}

{
    "_id": {
        "$oid": "542979c3e4b0e67da1edc807"
    },
    "TeamName": "Aston Villa",
    "BadgeSmall": "http://footballcomps.azurewebsites.net/Content/Images/Badges/Small/astonvilla.png",
    "BadgeLarge": "http://footballcomps.azurewebsites.net/Content/Images/Badges/Large/astonvilla.png",
    "TeamImage": "http://footballcomps.azurewebsites.net/Content/Images/Teams/astonvilla.png",
    "Formation": "http://footballcomps.azurewebsites.net/Content/Images/Formations/astonvilla.png"
}

{
    "_id": {
        "$oid": "542c45eee4b0413a3dd4d43e"
    },
    "TeamName": "Crystal Palace",
    "BadgeSmall": "http://footballcomps.azurewebsites.net/Content/Images/Badges/Small/crystalpalace.png",
    "BadgeLarge": "http://footballcomps.azurewebsites.net/Content/Images/Badges/Large/crystalpalace.png",
    "TeamImage": "http://footballcomps.azurewebsites.net/Content/Images/Teams/crystalpalace.png",
    "Formation": "http://footballcomps.azurewebsites.net/Content/Images/Formations/crystalpalace.png"
}

夹具：

主队：阿斯顿维拉，客队：阿森纳：

{
    "_id": {
        "$oid": "542f0dfbe4b0413a3dd4ead4"
    },
    "Date": "2014-09-20",
    "HomeTeamId": "542979c3e4b0e67da1edc807",
    "AwayTeamId": "542978c4e4b0e67da1edc7f3",
    "HomeTeamScore": 0,
    "AwayTeamScore": 3,
    "HomeTeamScorers": "",
    "AwayTeamScorers": "Ozil 33,Welbeck 34,Cissokho 35 (OG)"
}

主队：阿森纳，客队：水晶宫：

{
    "_id": {
        "$oid": "542f0f54e4b0413a3dd4ead8"
    },
    "Date": "2014-08-16",
    "HomeTeamId": "542978c4e4b0e67da1edc7f3",
    "AwayTeamId": "542c45eee4b0413a3dd4d43e",
    "HomeTeamScore": 2,
    "AwayTeamScore": 1,
    "HomeTeamScorers": "Koscielny 45,Ramsey 90",
    "AwayTeamScorers": "Hangeland 35"
}

【问题讨论】：

标签： mongodb mongodb-.net-driver mongodb-query

【解决方案1】：

我个人建议在游戏中嵌入团队对象团队及其图标不太可能在一个赛季内发生变化。拨打 1 次而不是 3 次。

{
    "_id": {
        "$oid": "542f0dfbe4b0413a3dd4ead4"
    },
    "Date": "2014-09-20",
    "HomeTeamId": "542979c3e4b0e67da1edc807",
    "AwayTeamId": "542978c4e4b0e67da1edc7f3",
    "HomeTeamScore": 0,
    "AwayTeamScore": 3,
    "HomeTeamScorers": "",
    "AwayTeamScorers": "Ozil 33,Welbeck 34,Cissokho 35 (OG)",
    "HomeTeam" : {
        "_id": {
            "$oid": "542979c3e4b0e67da1edc807"
        },
        "TeamName": "Aston Villa",
        "BadgeSmall": "http://footballcomps.azurewebsites.net/Content/Images/Badges/Small/astonvilla.png",
        "BadgeLarge": "http://footballcomps.azurewebsites.net/Content/Images/Badges/Large/astonvilla.png",
        "TeamImage": "http://footballcomps.azurewebsites.net/Content/Images/Teams/astonvilla.png",
        "Formation": "http://footballcomps.azurewebsites.net/Content/Images/Formations/astonvilla.png"
    },
    "AwayTeam" : {
            "_id": {
                "$oid": "542978c4e4b0e67da1edc7f3"
            },
            "TeamName": "Arsenal",
            "BadgeSmall": "http://footballcomps.azurewebsites.net/Content/Images/Badges/Small/arsenal.png",
            "BadgeLarge": "http://footballcomps.azurewebsites.net/Content/Images/Badges/Large/arsenal.png",
            "TeamImage": "http://footballcomps.azurewebsites.net/Content/Images/Teams/arsenal.png",
            "Formation": "http://footballcomps.azurewebsites.net/Content/Images/Formations/arsenal.png"
    }
}

【讨论】：