MongoDB

It is common to use arrays as field values in MongoDB documents to store different types of data. Let’s say we have a collection of colleges where each document represents a different college and each contains an array having different courses the college offers. Now suppose we have to perform some kind of analysis operation […]

MongoDB is a NoSQL database that can store a large amount of unstructured data. Data stored in MongoDB are easy to retrieve as it can hold them in flexible formats depending upon the need such as graphs, key values, documents, etc. A MongoDB database has many collections in which we can insert records, the records

MongoDB can store huge amounts of data and sometimes while inserting data in bulk some fields that we want to remove earlier remain there and are inserted in the database with empty or some values. Deleting these fields from all documents using some ordinary method can be painful. So here comes another extremely useful MongoDB

In MongoDB, we can export data to a variety of files which provides a convenience for the external programs to interact with it. Common file types in which data can be exported are TSV, CSV, BSON, and JSON. MongoDB allows developers to achieve this export feature with the help of mongoexport tool. This tool must

Suppose you have created a schema for storing data and stored some data based on it. Later any time you want to change the field name, well, you can easily do it manually in the schema, but you cannot edit the large amount of stored data field names manually and you also can’t leave them,

You may heard about the JavaScript pop() method used to pop or remove elements from an array. Similarly, MongoDB has a $pop operator that provides similar functionality of removing an element from an array.  But, there is a catch here, you can not just simply use this operator to remove any element from an array,

Importing is a feature that most databases and language frameworks provide. This is done to make data exported from other sources usable in different forms by other programs, applications, or languages. In MongoDB, we can import data from a variety of files which provides a way to interact with datasets stored somewhere other than the

You know many operators that can be used to filter the selection criteria of documents from a MongoDB collection. Those operators return documents that meet specified parameters. What if we want to exclude certain criteria? Well, MongoDB has various operators for this too. One of them that we will talk about in this article is

In MongoDB, we store data in the form of documents. These documents may contain arrays or embedded arrays as field values. Suppose you have a big collection of records where you have millions of documents and in each of them there are lots of fields, among them some might be array fields containing an array

One of the most popular database management services available especially for Node.js is MongoDB, which includes an expansive range of advanced tools.  An application that uses such a powerful database system can include a wide range of features and functionalities. Furthermore, enhanced security functions can be implemented.  A MongoDB database allows you to build applications