jaimemin

{
  "_id": ObjectId("..."),
  "text": "This is the original comment.",
  "user": "Alice",
  "timestamp": ISODate("2023-10-02T12:00:00Z"),
  "replies": [
    {
      "text": "This is a reply to the original comment.",
      "user": "Bob",
      "timestamp": ISODate("2023-10-02T12:10:00Z"),

jaimemin

{
  "_id": ObjectId("..."),
  "title": "Moby Dick",
  "author": "Herman Melville",
  "subset_reviews": [
    {"user": "Alice", "rating": 5, "comment": "Loved it!", "date": ISODate("2023-10-01T10:00:00Z")},
    {"user": "Bob", "rating": 4, "comment": "Good read.", "date": ISODate("2023-09-29T10:30:00Z")},
    // 리뷰 3개 생략
  ]
}

jaimemin

{
  "_id": ObjectId("..."),
  "city": "New York",
  "month": "October",
  "daily_date": [
    {"day": 1, "temperature": null, "condition": null},
    {"day": 2, "temperature": null, "condition": null},
  ]
}

jaimemin

{
  "_id": ObjectId("..."),
  "student_name": "John",
  "standard_courses": ["Math", "Science", "History"],
  "new_courses": ["Advanced Astrophysics", "Special Language Studies"]
}

jaimemin

{
  "_id": ObjectId("..."),
  "product_name": "Laptop XYZ",
  "reviews": [
    {"user": "Alice", "rating": 5},
    {"user": "Bob", "rating": 4}
  ],
  "computed_avg_rating": 4.5,
  "total_reviews": 200
}

jaimemin

{
  "_id": ObjectId("..."),
  "title": "Understanding MongoDB Patterns",
  "content": "...",
  "approximate_views": 5000,
  "exact_views": 5123,
  "last_update": ISODate("2023-10-06T14:30:00Z")
}

jaimemin

// products collection
{
  "_id": ObjectId("50if1ghbbcf86cd799439111"),
  "product_name": "Laptop ABC",
  "price": 1200,
  "speces": {...},
  "reviews": [...],
  // 기타 제품 정보
}

jaimemin

{
  "_id": ObjectId("..."),
  "username": "alice123",
  "email": "alice@email.com",
  "birthdate": ISODate("1990-01-01"),
  "schema_version": 1
},
{
  "_id": ObjectId("..."),
  "username": "bob456",

jaimemin

// 문서 1
{
  "_id": ObjectId("..."),
  "patient_id": "P45678",
  "type": "surgical",
  "surgery_name": "Appendectomy",
  "surgeon": "Dr.Smith",
  "date": ISODate("2023-10-04T10:00:00Z")
},
// 문서 2

jaimemin

{
  "_id": ObjectId("..."),
  "product_name": "Smartphone XYZ",
  "category": "Electronics",
  "attributes": [
    {"name": "color", "value": "black"},
    {"name": "storage", "value": "128GB"},
    {"name": "camera", "value": "12MP"},
    {"name": "battery", "value": "4000mAh"}
  ]