Hello,
I have question on the modeling approach.
Scenario : We have to impliment Reporting system for a client. 30% fo the reports that business want can be delivered using standard BI contents and rest 70% can be delivered with some customization to the BI contents.
Client has liscence to use both BW on HANA & HANA native
We have 2 options for modeling
1) Use BW on HANA : Install BI contents and deliver all the required reports using standard BW contents with some enhancements.
Pros
- By using BI content we can save development efforts
- Using BICS connection BO reports can use BW hierarchies
Cons
- It locks client into a proprietary OLAP structure and also doesn't align with SAP's long term vision in terms of how HANA should be used
- SAP recommends to stay away from cubes, use granular DSO's, not engage OLAP for calculations & use self-service analytics thru use of Universe
- Not all the BI contents are In Memory optimized.
2) Use HANA studio for modeling : Install BI contents and consume all the acquisition layer DSO's in HANA (Analytic Views) and create calculation views based on these views and do reporting on these HANA models.
Pros
- No duplication of data (only one phycical layer and rest are views).
- In line with SAP's vision
- HANA Live contents can be leveraged
Cons
- HANA live contents are not matured as BI contents
- HANA hierarchies are not supported in BO tools like Webi, we can not expand and collapse hierarchies, which is possible using BICS connection on BE queriues.
- More efforts required for Modeling
So, what is the best approach in current date? BW modeling or HANA modeling?
What is SAP's vision on use of both these technologies?
Thanks & Regards
Sagar
