Prerequisites: For getting started with this you should have some familiarity with NodeJS, ExpressJS, MongoDB, and Mongoose....
The findByIdAndUpdate() function is used to find a matching document, updates it according to the update arg, passing any options, and returns the found document (if any) to the callback....
Follow these simple steps to learn how to create a login form using Node.js and MongoDB. Node JS login form allows users to log in to the website after they have created their account using the signup form....
The find() function is used to find particular data from the MongoDB database. It takes 3 arguments and they are query (also known as a condition), query projection (used for mentioning which fields to include or exclude from the query), and the last argument is the general query options (like limit, skip, etc)....
The findById() function is used to find a single document by its _id field. The _id field is cast based on the Schema before sending the command....
In MongoDB, Population is the process of replacing the specified path in the document of one collection with the actual document from the other collection....
The updateOne() function is used to update the first document that matches the condition. This function is the same as update(), except it does not support the multi or overwrite options....
The findOne() function is used to find one document according to the condition. If multiple documents match the condition, then it returns the first document satisfying the condition....
The insertMany() function is used to insert multiple documents into a collection. It accepts an array of documents to insert into the collection. This function is efficient and can significantly speed up the process of adding multiple documents compared to inserting each document individually....
The deleteMany() function is employed to remove all documents meeting specified conditions from a collection. Unlike the remove() function, deleteMany() deletes all matching documents without considering the single option....
To connect node to a MongoDB database we can use mongoose library from npm, It is an Object Data Modeling Library that provides predefined methods for database connection, creating schema and models....
The `save()` function in Mongoose serves the purpose of persisting a document in the MongoDB database. By invoking this function, you can add new documents to the database or update existing ones. It facilitates the process of storing the document, along with its associated data, in the designated MongoDB collection, making the information persistent and accessible for future retrieval and queries....
