Creating a Database
To create a database in MongoDB, start by creating a MongoClient object, then specify a connection URL with the correct ip address and the name of the database you want to create.
MongoDB will create the database if it does not exist, and make a connection to it.
Example
Create a database called "mydb":
let MongoClient = require('mongodb').MongoClient;
let url = "mongodb://localhost:27017/mydb";
MongoClient.connect(url, function(err, db) {
if (err) throw err;
console.log("Database created!");
db.close();
});Save the code above in a file called "demo_create_mongo_db.js" and run the file:
Run "demo_create_mongo_db.js"
C:\Users\
Your Name
>node demo_create_mongo_db.jsWhich will give you this result
Database created!Important: In MongoDB, a database is not created until it gets content!
MongoDB waits until you have created a collection (table), with at least one document (record) before it actually creates the database (and collection).