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SAP / SAP Mid Level (3 to 8 yrs) Interview questions

What is the difference between a CDS View and a classical ABAP view?

A classical ABAP view (defined in transaction SE11) is a fairly limited database view construct, typically supporting only simple inner joins between tables with restricted expressiveness. CDS Views are far more capable: they support associations (lazy, reusable joins), calculated and derived fields, annotations driving UI and OData behavior, extensibility, and a rich expression language.

Classical ABAP ViewCDS View
Limited to simple inner joins.Rich associations, outer joins, unions, calculated fields.
No metadata for UI/OData generation. Annotations drive Fiori UI rendering and OData service exposure directly.
Defined via SE11 UI.Defined as code (DDL source), version-controllable like any ABAP object.

For modern SAP development, CDS Views have essentially superseded classical ABAP views as the recommended way to define reusable, semantically-rich data models, particularly for anything that needs to be exposed via Fiori or OData.

What join capability do CDS Views support that classical ABAP views are limited on?
What can CDS View annotations drive that classical ABAP views cannot?

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