One-To-Many Relationships In Mongodb

{
    "_id": 1,
    "orderDate": ISODate("2023-04-13T00:00:00Z"),
    "total": 100.0,
    "lineItems": [
        {
            "productId": 1001,
            "productName": "Product 1",
            "quantity": 2,
            "price": 25.0
        },
        {
            "productId": 1002,
            "productName": "Product 2",
            "quantity": 1,
            "price": 50.0
        }
    ]
}

// posts collection
{
    "_id": 1,
    "title": "Post 1",
    "body": "This is the body of post 1"
}

// comments collection
{
    "_id": 1001,
    "postId": 1,
    "author": "John Doe",
    "comment": "Great post!"
},
{
    "_id": 1002,
    "postId": 1,
    "author": "Jane Smith",
    "comment": "Thanks for sharing"
}

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