SP6 Core Data Services (CDS) - Foreign Keys

Hi all,

I'm currently using CDS to create a new tables but I haven't find about Foreign keys. As stated by Henrique in this post: http://scn.sap.com/community/hana-in-memory/blog/2012/12/04/checking-out-foreign-keys-in-hana-sps5 in SP5 HANA started the process to become a transactional DB as well.

But, is there any FK in the CDS syntax? Or I'd have to create it manually with SQLs? Or even use associations in the oData Service?

Thanks,

Rodrigo P.