Import Contoso demo data for AX2012 R2 on SQL server 2008 SP3

hi guys 

I recently downloaded AX2012 R2 from PS, and installed it on SQL server 2008 SP3 now that i have to Load contoso demo data(the .bak files) , is it a straight forward restore or do i have to run some scripts, because i read somewhere that Contoso demo data for AX2012 R2 is taken from SQL server 2008 R2, hence my question do let me know. if thats the case.