Lets look at some basics of indexes in MongoDB. If we have 3 fields in a document - name, age,…
Lets learn about multikey indexes and how they are efficient in MongoDB. database name: daily collections: gadgets, users Insert documents…
Lets learn how to remove documents from the collection using remove() and drop() methods. test database, names collection > db.names.find().pretty()…
Lets learn how to update all the documents present in a collection using update() method, using the option multi: true…
Lets learn to use upsert option with update() method. upsert basically inserts document into the collection, if there is no…