需要为以下内容创建Mongodb集合的帮助吗

我想创建一个web应用程序，用于解决客观问题和答案。我使用的是Mongodb，我必须为以下关系创建集合

Classes (like lkg, ukg … )
-- Subjects (like Maths, English …)
---- Lessons (like Lesson 1, Lesson 2 …)
------ Chapters (like Chapter 1A, Chapter 1B …)
-------- Questions (Q1, Q2 …. With correct answer and its description)

我想了以下几点，但我无法理解我的课程集之间的关系。所以我真的需要帮助来建立我的收藏关系。人们可以提出与我不同的解决方案

"Classes": [
    {"id": 01, "name": "Class 1", "slug": "class-1"},
    {"id": 02, "name": "Class 2", "slug": "class-2"},
    .......
]

"Subjects": [
    {"id": 01, "name": "Math", "slug": "math"},
    {"id": 02, "name": "English", "slug": "english"},
    .......
]

"lessons": [
    {
    "name": "Lesson 1",
    "slug": "lesson-1",
    "class_id": 01,
    "subject_id": 01,
    "chapters": [
        {
        "name": "Chapter 1A",
        "slug": "chapter-1a",
        "questions":[
            {
                "que": "Question 1 here?", 
                "choices": ["A": "ans 1", "B": "ans 2", "C": "ans 3", "D": "ans 4"],
                "answer": "A",
                "description": "Solution description will go here....."
            },
            {
                "que": "Question 2 here?", 
                "choices": ["A": "ans 1", "B": "ans 2", "C": "ans 3", "D": "ans 4"],
                "answer": "B",
                "description": "Solution description will go here....."
            },
            ............
            ............
            ]
        },
        {
        "name": "Chapter 1B",
        "slug": "chapter-1b",
        "questions":[
            {
                "que": "Question 1 here?", 
                "choices": ["A": "ans 1", "B": "ans 2", "C": "ans 3", "D": "ans 4"],
                "answer": "A",
                "description": "Solution description will go here....."
            },
            {
                "que": "Question 2 here?", 
                "choices": ["A": "ans 1", "B": "ans 2", "C": "ans 3", "D": "ans 4"],
                "answer": "B",
                "description": "Solution description will go here....."
            },
            ............
            ............
            ]
        },
        ...................
        ...................
    ]
    },
    {
    "name": "Lesson 2",
    "slug": "lesson-2",
    "class_id": 02,
    "subject_id": 02,
    "chapters": [
        {
        "name": "Chapter 1A",
        "slug": "cahpter-1a",
        "questions": [
            {
                "question": "Question 1 here?", 
                "choices": [A: "ans 1", B: "ans 2", C: "ans 3", D: "ans 4"],
                "answer": "A",
                "description": "Solution description will go here....."
            },
            {
                "question": "Question 2 here?", 
                "choices": [A: "ans 1", B: "ans 2", C: "ans 3", D: "ans 4"],
                "answer": "B",
                "description": "Solution description will go here....."
            },
            ............
            ............
            ]
        },
        {
            "name": "Chapter 1B",
            "slug": "chapter-1b",
            "questions":[
                {
                    "question": "Question 1 here?", 
                    "choices": [A: "ans 1", B: "ans 2", C: "ans 3", D: "ans 4"],
                    "answer": "A",
                    "description": "Solution description will go here....."
                },
                {
                    "question": "Question 2 here?", 
                    "choices": [A: "ans 1", B: "ans 2", C: "ans 3", D: "ans 4"],
                    "answer": "B",
                    "description": "Solution description will go here....."
                },
                ............
                ............
                ]
            },
            ...................
            ...................
    ]
    },
    ....................
    .......................
]

---

是的，我不会实现这种数据结构。这是在SQL Par土地上要做的事情。< /P> 取而代之的是，将结构展平，并确保端点包含视图所需的内容，而不是下面嵌套的内容

比如：

"lessons": {
  "lesson_id_1": {
    "name": "Lesson 1",
    "slug": "lesson-1",
    "class": "Class 1",
    "subject": "Math",
    "chapters": [
      "Chapter 1A"
    ]
  }
},
"questions": {
  "lesson_id_1": {
    "Chapter 1A": {
      "slug": "chapter-1a",
      "questions": [{
        "que": "Question 1 here?", 
        "choices": ["A": "ans 1", "B": "ans 2", "C": "ans 3", "D": "ans 4"],
        "answer": "A",
        "description": "Solution description will go here....."
      },{
        "que": "Question 2 here?", 
        "choices": ["A": "ans 1", "B": "ans 2", "C": "ans 3", "D": "ans 4"],
        "answer": "B",
        "description": "Solution description will go here....."
      }]
    }
  }
}

使用

/lessons/lesson\u id\u 1

获取第1课第1A章问题：

/questions/lesson\u id\u 1/chapter 1A/

--

---

您试图做的是SQL。您需要改变您的范例，并提出以下问题：我真正需要什么数据？在哪里？

我建议的结构只是您展示的关系模型的一个扁平版本，适合您的用例的实际模型将完全取决于它。