Chapter 3. More Details on Data Models
So far we’ve covered the key feature in most NoSQL databases: their use of aggregates and how aggregate-oriented databases model aggregates in different ways. While aggregates are a central part of the NoSQL story, there is more to the data modeling side than that, and we’ll explore these further concepts in this chapter.
3.1. Relationships
Aggregates are useful in that they put together data that is commonly accessed together. But there are still lots of cases where data that’s related is accessed differently. Consider the relationship between a customer and all of his orders. Some applications will want to access the order history whenever they access the customer; this fits in well with combining the ...
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