how to use a mongoose model code example

Example 1: model mongoose

const modelName = mongoose.model("collectionname", collectionSchema);

//example
const fruitSchma = new mongoose.Schema ({
  name: String
});
const Fruit = mongoose.model("Fruit", fruitSchema);

Example 2: mongoose modele

mongoose.connect('mongodb://localhost/gettingstarted', {useNewUrlParser: true,useUnifiedTopology: true});