Welcome to Part 29 of the Ultimate Guide to Server-Side Scripting series! In this session, we’ll learn how to update a single document in MongoDB using the updateOne() method. You’ll understand how to modify existing records, apply update operators, and verify your changes — both in the Mongo Shell and with Mongoose.

✅ What You’ll Learn:
✔️ Syntax and usage of updateOne() in MongoDB
✔️ How to update documents via Mongo Shell and Mongoose
✔️ Using $set, $inc, and $currentDate operators
✔️ Checking modified results and matched document counts
✔️ Handling errors and ensuring safe updates

💡 Why It Matters:
🔹 Teaches you how to modify specific data efficiently
🔹 Builds the foundation for dynamic API updates
🔹 Helps maintain clean and accurate data in your applications