What’s CDS

CDS (Core Data Services)

is

an infrastructure that can be used by developers to create the underlying (persistent) data model which the application services expose to UI clients.

CDS

is just

SQL + Annotation

SQL

is

SQL

What’s Annotation

Annotation

is just a

Note / Explanation / Comment

How to use Annotation

Annotation

is explained by

Evaluation Runtime (Engine)

What’s Engine

Engine

is one of

SADL / BOPF / Analytic Manager / Enterprise Search / ABAP / HANA …

Vision

@DigAcc.subscribe
define entity I_Interaction {
…
}

-> engine:

When the interaction type equals to 'DigAcc_Subscribe', then create an contact

Thank you

@tiven.wang