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

What are annotations in CDS Views and why are they important?

Annotations are metadata tags (starting with @) attached to a CDS View or its fields, declaring how that view or field should behave or be treated by other SAP tools — from database catalog settings, to OData/UI rendering hints, to analytical semantics — without writing any procedural code.

@AbapCatalog.sqlViewName: 'ZCUSTVIEW'
@UI.headerInfo: { typeName: 'Customer' }
define view Z_Customer as select from kna1 {
    key kunnr as CustomerId,
    @UI.lineItem: [{ position: 10 }]
    name1     as CustomerName
}

This is what makes CDS Views so central to modern SAP development: the same view definition that describes the data also describes how a Fiori list report should render it, or how an OData service should expose it — declarative metadata driving actual application behavior, rather than needing separate, hand-written UI or service configuration layered on top.

What do CDS View annotations declare?
Why are annotations central to modern SAP development?

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