It is common to have a single database in the majority of monolithic applications. And almost always, there is a database architect or a designated owner responsible for its integrity and maintenance. The path to any application enhancement that requires a change in the database has to go through this route. For me, it has never been an easy task. This further slows down the process of application enhancement, scalability, and technology adoption.
Because each microservice has its own independent database, the decision-making related to changes required in the database can be easily delegated to the respective team. We don't have to worry about the impact on the rest of the system, as there will not be any.
At the same time, ...
