MongoDB basic steps after installation

View logs:

cat /var/log/mongodb/mongod.log

Configuration file location:

/etc/mongod.conf

Enter MongoDB shell:

mongo

List the databases;

mongo> show dbs

Create a new database or switch to a existing database:

mongo> use school

To view which database you are switched to:

mongo> db

Create collection inside the database:

mongo> db.createCollection("persons")

List collections:

mongo> show collections

To add the data to the collection:

mongo> db.persons.insert({
        "name": "Jonh Doe",
        "age": 45,
        "location": "New York",
        "salary": 5000
       })

Retrieve data from the database:

mongo> db.persons.find()

Retrieve data from the database using a filter:

mongo> db.persons.find({"name": "John Doe"})