MongoDB — Documents

Document Structure

{
  "_id": ObjectId("..."),
  "name": "John Doe",
  "email": "john@example.com",
  "age": 30,
  "address": {
    "street": "123 Main St",
    "city": "New York"
  },
  "hobbies": ["reading", "gaming"]
}

Insert Document

db.users.insertOne({
  name: "John Doe",
  email: "john@example.com",
  age: 30
})

Insert Multiple

db.users.insertMany([
  { name: "Jane", email: "jane@example.com" },
  { name: "Bob", email: "bob@example.com" }
])

Find Document

db.users.findOne({ name: "John" })
db.users.find({ age: { $gt: 25 } })

Update Document

db.users.updateOne(
  { name: "John" },
  { $set: { age: 31 } }
)

Delete Document

db.users.deleteOne({ name: "John" })

Mini Practice

1. Insert a document
2. Find documents
3. Update a document
4. Delete a document

Up Next

Continue with Data Types — BSON data types.