MongoDB – Delete Document In this chapter, we will learn how to delete a document using MongoDB. The remove() Method MongoDB”s remove() method is used to remove a document from the collection. remove() method accepts two parameters. One is deletion criteria and second is justOne flag. deletion criteria − (Optional) deletion criteria according to documents […]

MongoDB – Query Document In this chapter, we will learn how to query document from MongoDB collection. The find() Method To query data from MongoDB collection, you need to use MongoDB”s find() method. Syntax The basic syntax of find() method is as follows − >db.COLLECTION_NAME.find() find() method will display all the documents in a non-structured […]

MongoDB – Projection In MongoDB, projection means selecting only the necessary data rather than selecting whole of the data of a document. If a document has 5 fields and you need to show only 3, then select only 3 fields from them. The find() Method MongoDB”s find() method, explained in accepts second optional parameter that […]