You can create a database, geodatabase administrator, and enterprise geodatabase in a Microsoft SQL Server or PostgreSQL database management system using the Create Enterprise Geodatabase geoprocessing tool or a Python script. You can also create a default tablespace, geodatabase administrator, and enterprise geodatabase in an Oracle database using the Create Enterprise Geodatabase tool.
To create a geodatabase in a precreated and configured IBM Db2 or IBM Informix database, use the Enable Enterprise Geodatabase geoprocessing tool or a Python script.
For instructions, see the topic for the database management system you want to use: