Since Mongo is a NoSQL database, there are no join tables. Relational data instead uses populations. Populations behave like a join table, but are used at call time.
(thumping hip hop music)…- Mongo is a NoSQL database,…so we don't have join tables.…I was talkin' about this earlier,…but we need a way of seeing relational data.…So the solution for this is called population.…You can think of it as join table at call time.…So what does that look like?…So imagine this.…We have a dog schema.…It has a owner,…it's type is ObjectID,…it refers to a person.…Right?…Then we have a person schema.…
It just has a name.…So I make those two models.…I make a dog model, I make a person model.…All this stuff we've done before.…We've done all this so far.…It's not new.…And then what I want to do…is I say dog dot find,…which is giving me all the dogs.…And I call this method called populate.…And then I pass in the property…on the dogs that I want to populate.…In this case I want to populate…the owner fields.…And then I call this method called exec.…Exec is short for execute.…
It will either return a promise…which I'm using in this case,…or it also takes a callback.…A node-style callback, so it's up to you.…
This course was created by Frontend Masters. It was originally released on 12/30/2015. We're pleased to host this training in our library.
- Executing Node.js
- Using Express
- What is middleware?
- Testing in Node.js
- Using Mongo with Node.js
- Data modeling
- Querying data with Mongoose
- Identifying sensitive routes
- Configuring the deployment
Skill Level Intermediate
Node.js: Build Your First Microservicewith Daniel Khan2h 9m Intermediate
Building APIs Using Hapi in Node.jswith Kirsten Hunter2h 23m Intermediate
Node.js: Extend and Maintain Applicationswith Daniel Khan3h 35m Intermediate
2. REST APIs
5. Organization and Configuration
7. Data Modeling
10. Securing Routes
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