Was this a single database? How are databases organized in your architecture?

In complex architectures, multiple databases are often used, each responsible for its own part of the data or functionality (microservices approach). This allows isolating data, increasing scalability, and simplifying maintenance.

For example, a project may have a separate database for users, another for orders, and yet another for analytics. Each database can be of a different type (relational, NoSQL) depending on the requirements.

Organizing databases in architecture usually includes:

• Separation by domains (bounded contexts)
• Using APIs or events for data synchronization between services
• Centralized management of migrations and schemas

Thus, a single database is not always the optimal solution, especially in scalable systems.