In this chapter, we 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 and write ratios, the questions that our users will have in the most common cases, and cardinality among relationships.
We learnt about atomic operations and how we can construct our queries so that we can have ACID properties without the overhead of transactions.
We also learned about MongoDB data types, how they can be compared, and some special data types, such as the ObjectId, which can be used both by the database and to our own advantage.
Starting from modeling simple one-to-one relationships, we went 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...
