Cloud databases

As you look at the following model, you may be wondering why there are so many databases. This comes from the evolution of the application architecture over the past few decades, where specialization, speed, and scale have all become keys to success in this industry:

Figure 2.11 – Database types and services in AWS

There is not enough space in this chapter to visit each type of database that AWS offers. However, as part of this foundational overview, we do want to cover some of the relational databases and their basic features.

We will be covering the key-value database, Dynamo DB, in more detail in an upcoming chapter.

Relational databases

The word databases usually brings relational databases to mind, which have rows, columns, and schemas.

Relational databases in AWS come in three main flavors, as well as engines that can be classified as part of a community, commercial, or cloud native. Cloud-native engines are used...