Data can be accessed from SAP HANA by below 2 ways -
- Federation access via SAP HANA SDA (Smart Data Access)
- Physical Persistence
In one of recent client requirement, it was needed to put framework on when to opt for data federation approach & when to go for persistence approach.
I am putting below simplified point of view on this based on 5 key parameters -
With above framework, it becomes clear that Data federation access via SDA is recommended when -
- On Demand and Ad-hoc Analysis of Data from Remote Sources
- Less Data Volume is needed for data analysis
- Data Transformation complexity needed for analysis is less
- Cold or old data is needed for analysis
- Data needed for analysis from remote sources is not trusted, structured and harmonized