Can someone provide insight on how to create a foreign key-like functionality in Meteor, the JavaScript web framework?
I've noticed that MongoDB operates differently than sqlite3 or MySQL. I recall hearing that there are alternative methods for achieving this without relying on traditional foreign keys...
When working with MongoDB, it is important to note that it is a document store rather than a relational database. This means that there are no foreign keys or features like cascading updates. However, you can still create relationships between documents by referencing one document from within another using its _id (similar to a primary key). For example, in a User collection, you could have documents structured like this:
{
_id: "myId",
name: "Rahul",
locationId: "some_location_id"
}
If you need to access information about the location associated with a user, you would search the Location collection for a document with an _id matching the locationId stored on the User document.
To learn more about how to handle relationships in MongoDB, you can visit Foreign keys in mongo.
MongoDB, being a non-relational database, does not handle joins like traditional relational databases do. However, as a document database, MongoDB supports document nesting, which could potentially achieve the same result without needing traditional joins.
Nevertheless, the Meteor core team has a plan in place to make joins in subscriptions easier and also provide support for traditional relational databases.
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