Welcome to Part 30 of the Ultimate Guide to Server-Side Scripting!
In this tutorial, you’ll learn how to update multiple documents at once in MongoDB using the updateMany() method. This feature is essential for batch updates, data corrections, or applying global property changes efficiently.

✅ What You’ll Learn:
✔️ The syntax and structure of updateMany()
✔️ How to apply multiple field updates using $set, $inc, and $rename
✔️ Filtering which documents to update with query conditions
✔️ Confirming matched and modified document counts
✔️ Best practices for safe and efficient bulk updates

💡 Why It Matters:
🔹 Saves time by updating several documents in one command
🔹 Enables large-scale changes across collections
🔹 Reduces repetitive queries and improves performance