``` javascript
db
use video
db
movie = {"title" : "Star Wars: Epizod IV - Nowa Nadzieja", "director" : "George Lucas", "year" : 1977}
db.movies.insertOne(movie)
db.movies.find().pretty()
db.movies.findOne()
db.movies.updateOne({title : "Star Wars: Epizod IV - Nowa Nadzieja"}, {$set : {reviews: []}})
db.movies.find().pretty()
db.movies.deleteOne({title : "Star Wars: Epizod IV - Nowa Nadzieja"})
```