As I have dealt with other platforms, PostgreSQL has stood out to me as the platform I am most interested in because it feels like the one that is most competitive with SQL Server’s platform (Oracle is out there too, as is MySQL, and many others, but PostgreSQL feels like the balance of affordability and features that it has a similar feel enough to get started.)
There are a few high-level differences that can be confusing. A cluster is really just a server (or in SQL Server, an instance). Second, the way you execute a batch of code is very different, and sometimes this is based on the tool you are using. As you dig into how PostgreSQL works, some things will feel really normal, and some stuff will be very different from the other servers you have used.
Read on for the first post in the series, covering setup and connection.