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    MongoDB

    🍃 MongoDB Cheat Sheet

    [!info] MongoDB is a flexible, scalable NoSQL document database used widely in modern application development. It stores data in JSON-like documents, making it ideal for unstructured or semi-structured data.

    ⚙️ Installation

    🪟 Windows

    1. Download MongoDB from the official website.

    2. Run the installer and follow the setup wizard.

    🍏 macOS

    Install via Homebrew:

    brew tap mongodb/brew
brew install mongodb-community

    🐧 Linux

    Ubuntu / Debian

    sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 9DA31620334BD75D9DCB49F368818C72E52529D4

echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu $(lsb_release -cs)/mongodb-org/5.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-5.0.list

sudo apt-get update
sudo apt-get install -y mongodb-org

    Red Hat / CentOS

    1. Create a repo file:
    sudo vi /etc/yum.repos.d/mongodb-org-5.0.repo
    1. Add:
    [mongodb-org-5.0]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/5.0/x86_64/
gpgcheck=1
enabled=1
gpgkey=https://www.mongodb.org/static/pgp/server-5.0.asc
    1. Then:
    sudo yum install -y mongodb-org

    🔄 Starting the MongoDB Service

    Windows

    mongod --install
net start MongoDB

    macOS / Linux

    sudo systemctl start mongod

    🧪 Access MongoDB Shell

    mongo

    💻 Basic MongoDB Commands

    [!tip]
    Use these commands within the mongo shell unless otherwise specified.

    📋 Show Databases

    show dbs

    🧭 Switch/Create Database

    use your_database_name

    🗃️ Create a Collection

    db.createCollection("your_collection_name")

    🧾 Insert Document

    db.your_collection_name.insertOne({ key1: "value1", key2: "value2" })

    🔍 Find Documents

    db.your_collection_name.find()

    🔎 Find with Filter

    db.your_collection_name.find({ key: "value" })

    🛠️ Update One Document

    db.your_collection_name.updateOne(
  { key: "value" },
  { $set: { new_key: "new_value" } }
)

    🛠️ Update Multiple Documents

    db.your_collection_name.updateMany(
  { key: "value" },
  { $set: { new_key: "new_value" } }
)

    ❌ Delete One Document

    db.your_collection_name.deleteOne({ key: "value" })

    ❌ Delete Multiple Documents

    db.your_collection_name.deleteMany({ key: "value" })

    🧠 Notes

    [!note] You can connect programmatically using drivers for:

    Check out: MongoDB Drivers

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    🏷️ Tags 📚

    #mongodb #nosql #database #mongo

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