first mscompress, after dbshrink ?

Hello,

I am compressing our ECC 6.0 DB and the initial size is 900 GB.

I am using mscompress and I expect to reduce more than 50%

the main question is: after finished the compress step, should I run the dbshrinkdb command?

I can find any note or reference to this point..

regards

Romel Rodríguez