Optimised approach in HANA in a BW Landscape

Hi Folks
Could someone share the opinions /ideas on the following scenarios in a typical existing landscape how best we can accommodate HANA
I have existing landscape where i have ECC 6.0 ,BW 7.3 running on DB2 as DB.
I have a new HANA SP7.0 box along with BO 4.0 FP03 .
Now if i would like to enhance the following scenario what will be the possible  approaches
- I have to give an extra field in the BO report which is taking the data from BW infocube and loading the data from ECC 0FI_GL_14 .
- I donot want to modify or disturb the existing flow  and i wanted to report extra field which is available from ECC BKPF table. 
How exactly we can approach in the following two cases.
Assume that
case 1 : my ECC and BW are attached to HANA system with DB2 .
Case 2: my ECC and BW are running on HDB and attached to HANA system  .
Thanks in Advance for your help..!
Regards
K M R
!...tcaf eht syawla ton si rorrim
mirror is not always the fact...!

Hi ,
   When we talk about BW on HANA, the HANA has different role to play based on the licence you have
1) If you have only DB license -->then HANA will act as a database for BW application and the performance intensive code written in ABAP is pushed down to HANA as a DB procedure . So in short it will act as a DB layer for BW application and also it holds the application logic for many performance intensive operations.
2) If you have Enterprice or Biggeer license --> What ever I mentioned above in point 1 holds good plus  it can also act as a datamart (similar to a native HANA).
Search in goolge you will get more detailed information on this topic.
Thanks & Regards
  A.Dinesh

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