Intel SCS ver 9.1 - which SQL editions are supported?

Hi,

I'm planning on installing Intel SCS ver 9.1, along with the RCS.

I understand that an SQL database is required to install SCS in database mode.

But I cannot seem to find any information as to which versions of SQL are supported?

So when installing Intel SCS 9.1 is SQL Express 2014 supported or do I need a different version?

Many Thanks