MongoDB

use admin

db.employee.insertMany([
{name : "Dipanshu", age : 20, city : "Aligarh"},
{name : "Rishabh", age : 17, city : "Indore"},
{name : "Shivam", age : 19, city : "Delhi"}
]);
db.employee.find()

db.employee.find({city : "Indore"});

db.employee.deleteOne({name : "Shivam"})
db.employee.find()