MongoDB Basic Commands

Mongodb is a NoSQL database used for bigdata handling applications. In this blog, I have mentioned the basic commands of the Mongodb compass (>_MONGOSH).

show dbs- It will show all the stored databases.

db- It will show the currently active database.

use (Database Name)- It will select the database or if it is unavailable, it will create a new database.

db.students.insertOne()

This will add a new document to a collection.

db.students.insertMany([{},{}])

This will add multiple documents to a collection.

db.students.find()

This will get all documents from a collection.

db.students.findOne()

This will get the first document from the collection.

db.students.findOne({filter})

This will get the specific document from the collection which satisfies the given condition.

db.students.find({filter})

This will get all the specific documents from the collection which satisfies the given condition.

db.students.updateOne({filter},{$set:{data}})

This will update a specific document from the collection which satisfies the given condition. Updated results is given below.

db.students.updateMany({filter},{$set:{data}})

This will update specific documents from the collection which satisfies the given condition.

Updated results is given below.

db.students.deleteOne({filter})

This will delete a specific document from the collection which satisfies the given condition.

db.students.deleteMany({filter})

This will delete the specific documents from the collection which satisfies the given condition. Updated results is given below.

Thank you for reading…