84 Virtual Properties Using MongoDB with Express A Complete NODE JS - видео

In this lecture you are going to learn about virtual properties. Virtual properties are basically the fields which we want in the result but they dont actually exists in the database. For example lets say we are storing date of birth of the user in the database collection. From that date of birth we can calculate the age of the user. So we want age field in the result but it does not exists in the database collection. Here age is derived from an existing field. Learn about this keyword here: ,
Источник видео: RuTube.ru (Обучение)