4 ms·

There are no explicit foreign key relationships though if that is what you mean ?

• xellisx 8y ago
  I know there was a way to "link" records, but do to do anything with them, you had to pull all the data back into your app and manually filter and process records.
  • christkv 8y ago
    That's not been true for awhile. You use the aggregation framework with the $lookup stage to do an outer left join. db.employees.aggregate([{ $lookup: { from: "departments", localField: "departmentName", foreignField: "departmentName", as: "managers" } }]);
    • christkv 8y ago
      You can do nested joins as well. However deeply nested joins in MongoDB is probably an anti-pattern.