Develop object-relational database systems in Windows.
DOWNLOAD
Free
PostgreSQL is an open source object-relational database system for Windows and other operating systems.
PostgreSQL installer includes the PostgreSQL server, pgAdmin; a graphical tool for managing and developing your databases, and StackBuilder; a package manager that can be used to download and install additional PostgreSQL tools and drivers. Stackbuilder includes management, integration, migration, replication, geospatial, connectors and other tools.
DOWNLOAD
Free
Amazing old-fashion SQL database!
I'm trying it first time. Let's see how fine it works.
I like it