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Performance of Native HANA Views vs CDS Views for Complex Data Models Scenarios in UI5 App

I wonder what approach to take if we have a complex modeling scenario involving 10+ tables (maybe more) that also involves calculations, string operations, aggregations, ... etc.

From the performance point of view, should we implement complex data model in multiple CDS view(s) or should we go for Native HANA View(s) development? For Native HANA View approach the resulting HANA View could be enveloped in CDS Views and/or SAP Gateway Service to expose complex data model to SAPUI5/Fiori application?

Will performance of CDS View vs Native HANA View degrade with complexity? Are there any benchmarks available?

Please, advise.

Adam Baryla

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