No this is not possible with IFMX.
You can encrypt the data via the application and decrypt
it later. But this approach will only work if a single application
is accessing the data, otherwise all applications must
have the ability to encrypt/decrypt the data.
There has been a company called Protegrity. I heard some
rumors that they developed a datablade for encrypting
data in IFMX 9.x databases. But I have no additional
information on this. You might check their website:
www.protegrity.com
With the upcoming IDS 9.40 release you can encrypt the
network traffic between client and server, but not the
data stored in the database.