In CONNECT Edition, database supported info has been changed.

Those main stream relational database versions which are NOT supported by their producers are removed from our support list as well.

Here is the list in Help Document in CONNECT Edition.
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Supported Database

MicroStation supports many of the popular relational database software product families on the market today. Selecting the right one can be difficult as these databases represent a broad range in sophistication, performance and cost. You can implement anything from a simple single-user database on a computer to a full featured corporate network system with database servers and different vendor databases all interacting with the same design files.

Supported Database List

ODBC
Microsoft Access 2010 (64 bit)
Microsoft Access 2013 (64 bit)
SQL Server 2012 (64 bit)
SQL Server 2014 (64 bit)
Oracle 11g (64 bit)
Oracle 12c (64 bit)

OLEDB
Microsoft Access 2010 (64 bit)
Microsoft Access 2013 (64 bit)
SQL Server 2012 (64 bit)
SQL Server 2014 (64 bit)
Oracle 11g (64 bit)
Oracle 12c (64 bit)

Oracle

Oracle 11g (64 bit)
Oracle 12c (64 bit)
Oracle 11g (32 bit)
Oracle 12c (32 bit) 

* Utilizing Oracle delivered version specific drivers.  The client version should match the database server version.