Help me understand which enterprise geodatabase (mainly PostgreSQL question)

[AdrianWelsh]

I cannot find a good list that tells me what I am looking for. My company currently has ArcGIS for Server Workgroup, Standard license. Does this mean that I can only use Microsoft SQL Server Express as my Enterprise Geodatabase?

If I was presented with a PostgreSQL database, would I not be able to connect to this database due to the type of license that I have?

All of the documentation I have found tells me that I need to download the installation files from My Esri. (http://desktop.arcgis.com/en/arcmap/10.3/manage-data/gdbs-in-postgresql/get-started-gdb-in-postgresq...) If there are no installation files, is it safe to assume that I cannot use this type of database?

I believe I heard Derek Law mention the database limitations in one of his talks at the UC, but I cannot find that in his presentation slides.

Thanks in advance!

[PanagiotisPapadopoulos]

Information about that you can find here

http://www.esri.com/library/brochures/pdfs/arcgis-server-functionality-matrix.pdf

pages 7, 17 & 18

[JoshuaBixby]

Short answer, yes, only Microsoft SQL Server Express.  This is a licensing issue, not a technical one.  Sometimes it is good to review the Licensing Terms of Use.  For ArcGIS 10.4 and several of the versions before, ArcGIS for Server Workgroup has the following term of use applied:

29.  Software can only be used with a supported version of SQL Server Express.  Supported versions are listed with the system requirements for the product on the Esri website.

[AdrianWelsh]

Thanks Joshua. So, in short, there is not much that can be done with Workgroup Server software....