Aggregate functions allow you to group together the documents and performs some computation on them, so that a single document is been return. . Retrieve the document from the database Note: We are using testDB database, and from the previous tutorial we are using collection as testCollection 1) Open a new command Prompt. 2) Enter “mongod“, …
In this tutorial, we will see some collections and document operations. Drop a collection in Mongo DB: The command is “db.collectionName.drop()”. Example: Write “db.testCollection.drop()”, and then press CTRL + ENTER. It will delete the testCollection collection from the database. Note: We are using testDB database, and collection as testCollection. Steps to inserting bulk documents one at …
We have installed Robo3T (flexible GUI for Mongodb, in our previous tutorial). Today in this tutorial we will see some database operations in MongoDB. So let’s get started with the database operations in MongoDB. 1) Open a new command prompt. 2) Enter “ mongod” and then press ENTER. This is going to run mongodb in the …
There are various NoSQL databases such as : MongoDB, Rethink DB, CouchDB etc. You know what are NoSQL databases and what are SQL databases. So in this we will learn about MongoDB that is a NoSQL Database . MongoDB Installation Steps 1) Go to MongoDB website and click on the TAB ” Community Server “. 2) Select the …