creating and querying a collection in another collection. mongodb node.js

Question

Is there a way to create and query a collection thats inside another collection... Can any one direct me to literature that can teach me how to do this? I've checked the mongodb docs tutorial and i havent come across this scenario No code example because i don't know where to start.

Here is what im trying to do.

Im modelling an online shop. So shop object details are in a collection holding many shops. Now each shop has got products and each product its own unique details. I want to a void using references and rather append but from tutorial from mongodb docs its not quite clear how to do it.

Im fairly new to mongodb Thanks.

Answer 1

There isn't any such thing as a collection inside another collection with mongo. A collection is a collection of documents.

There are a couple of ways to link documents to other documents, or collections of other data. The correct one to choose is up to you, your data, and your application.

• Any document can point to another ObjectId from any field
• You can have an array inside a document
• Combine the two, and you can have an array of document ids

Mongo is a document store, not a relational database. My suggestion is don't try to use it as a relational database. If what you need is an RDBMS, use one.

Arrays:

http://docs.mongodb.org/manual/reference/operator/query-array/ http://docs.mongodb.org/manual/reference/operator/update-array/

ObjectId:

http://docs.mongodb.org/manual/core/document/