The native MongoDB driver for Node.JS is a dependency that allows our JavaScript application to interact with the NoSQL database, either locally or on the cloud through MongoDB Atlas. We are allowed to use promises as well as callbacks that gives us greater flexibility in using ES6 features....

The estimatedDocumentCount() function is quick as it estimates the number of documents in the MongoDB collection. It is used for large collections because this function uses collection metadata rather than scanning the entire collection....

MongoDB, the most popular NoSQL database, we can count the number of documents in MongoDB Collection using the MongoDB collection.countDocuments() function. The mongodb module is used for connecting the MongoDB database as well as used for manipulating the collections and databases in MongoDB....

The Mongoose Aggregate API Aggregate() method of the Mongoose API is used to perform aggregation tasks. It allows us to create an aggregation pipeline. The aggregation constructor is used for building and configuring aggregation pipeline. It is recommended not to instantiate the Aggregation class directly instead we can use it on any model we have defined over mongoose schema. Let us understand the aggregate() method using an example....

Mongoose is a JavaScript library that provides a convenient way to interact with MongoDB databases. In order to use Mongoose, you need to create a connection between your Node.js application and the MongoDB server. The Mongoose connection represents this connection and provides a number of useful features, such as connection pooling and events for monitoring the connection status....

We can create a feedback form using PugJs, NodeJS, MongoDB, Express with the following steps. A feedback form takes the input from the user and sends the data to the server to process it and store it accordingly into the database....

The Queries Model.updateOne() function of the Mongoose API is used to update an existing document with the information mentioned in the “update” object. It updates only the first document that is returned in the filter....

Mongoose documents correspond to MongoDB documents in a one-to-one relationship. A mongoose document is basically an instance of a model....

The Mongoose Document API.prototype.toJSON() method of the Mongoose API is used on the Document model. It allows to convert the result set into JSON object. The converted JSON object then can be used as a parameter to the JSON.stringify() method. Let us understand the toJSON() method using an example....

Timestamp: With the help of timestamp document in the collection of the MongoDB can be differentiated on the basis of time. We can add Timestamp in Mongodb Collection in Node.js using the following approach:...

MongoDB the most popular NoSQL database, is an open-source document-oriented database. The term ‘NoSQL’ means ‘non-relational’. It means that MongoDB isn’t based on the table-like relational database structure but provides an altogether different mechanism for storage and retrieval of data. This format of storage is called BSON (similar to JSON format). Refer (this) article....

MongoDB, the most popular NoSQL database, is an open-source document-oriented database. The term ‘NoSQL’ means ‘non-relational’. It means that MongoDB isn’t based on the table-like relational database structure but provides an altogether different mechanism for storage and retrieval of data....