Although Couchbase is a document store and you can store any byte-array value that you wish, there are some common patterns for handling items that refer to other items. Some example use cases. For example: User 1234 is interested in topics A, B, X, W and belongs to groups 1, 3, 5
Shopping Cart 222 points to product-1432 and product-211
A Page has Comments, and each of those Comments has an Author. Each Author, in turn, has a "handle", an avatar image and a karma ranking.