what does mongoose model code example

Example 1: mongoose model

const schema = new mongoose.Schema({ name: 'string', size: 'string' });
const Tank = mongoose.model('Tank', schema);

Example 2: model mongoose

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

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

Example 3: mongoose modele

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