MongoDB

use admin
db.test
db.test.insertMany([
{Name: "Adarsh", Age:'21',Gender: 'M', city:'Lucknow'},
{Name: "Aditya", Age: '20',Gender: 'M', city: 'kanpur'},
{ Name: "Riya", Age:'18',Gender: 'F', city:'Gorakhpur'},
{Name: "Sakshi", Age:'22', Gender:'F', city:'katihar'}
]);
db.test.find();
db.test.find({city:'kanpur'});
db.test.deleteOne({Name:'Aditya'})
db.test.find()

db.getCollectionNames
show collections
db.getColectionInfos