In core data services (CDS), which definition is essential for a view?

In core data services (CDS), creating a data definition in your ABAP package is essential for a view because it lays the foundation for how the data is structured and accessed in the SAP HANA environment. A data definition provides a way to model your database entities in a way that they can be easily consumed by various applications or services.

This definition describes the view's structure, including the fields, data types, and relationships between different entities, facilitating intuitive data access and manipulation. By placing this definition within an ABAP package, you ensure that the view is correctly integrated into the ABAP development environment, adhering to the necessary development standards and practices.

While aspects like authorization models, SQL scripts, and execution environments are important in the broader context of CDS and application security or performance, the core aspect of defining how data is modeled fundamentally begins with this data definition. This understanding is crucial for developers looking to create robust and efficient data services using CDS in SAP HANA.