Summary
In this chapter, we have learned about schema design for relational databases and MongoDB and how we can achieve the same goal starting from a different starting point.
In MongoDB, we have to think about read-write ratios, the questions that our users will have in the most common cases, and cardinality among relationships.
We have learned about atomic operations and how we can construct our queries so that we can have ACID properties without the overhead of transactions.
We have also learned about MongoDB data types, how they can be compared, and some special data types, such as ObjectId, which can be used both by the database and to our own advantage.
Starting from modeling simple one-to-one relationships, we have gone through one-to-many and also many-to-many relationship modeling, without the need for an intermediate table, as we would do in a relational database, either using references or embedded documents.
We have learned how to model data for keyword...