Livecache upgrade- MaxDB?

Hi,

I am upgrading livecache from 7.7. to 7.9 for SCM 7.0 EHP3 system.

Just one clarification needed.

Is livecache upgrade actually the MaxDB upgrade?

or MaxDB is just a platform for livecache and both can be at different versions?..I mean MaxDB still on 7.7 and liveache alone getting upgraded to 7.9.

Please clarify for better understanding.

Thanks in advance