Gain insights into MongoDB's core concepts, including queries, CRUD operations, aggregation, and more. Discover how to build applications with hands-on experience and interactive widgets.

mongo.tar.gz

MongoDB is an open-source NoSQL database and stores data in the form of documents. It can be used as an alternative to traditional relational databases. NoSQL databases are schema-less and useful for working with large sets of distributed data. 

In this course, you will learn the core concepts of MongoDB including queries, documents, embedded documents, and operators with advanced features like CRUD operations, bulk write operations, GridFS, indexing, aggregation pipeline, authorization, and more.

You will have plenty of hands-on experience with the help of interactive widgets, and by the end you will have a strong understanding of how to build MongoDB-based applications.

MongoDB: The Complete Guide

# Update single document
We use the below commands to update a single document.

```
db.<collection-name>.updateOne(
    <filter query>,
    <update document>,
    <options>
);
```

## Filter query

`filter query` is used to build criteria to fetch documents. This should return only one document if used with the `updateOne` method.

## Update document

The updated document contains modifications that need to apply to the document. Through this document, we can:

- Replace a field value
- Add a new field
- Increment or decrement a number
- Add a new value in the array
- Remove a value from the array
- Perform modification on the document returned by `filter query`


Learn and practice commands to perform updates on single and multiple documents.

Introduction to Database and MongoDB

Create Database and Authorization

Performing CRUD Operations on MongoDB - Part 1

Performing CRUD Operations on MongoDB - Part 2

MongoDB Query and Database Performance

Learn Additional MongoDB Topics

Appendix

Update Documents: Part 1