Which repository objects can only be edited using ABAP Development tools in Eclipse?

The correct answer highlights an essential aspect of the development environment specific to the SAP HANA platform. Core Data Services (CDS) views are a key feature in SAP that allow for the semantic modeling of data and are primarily designed to be created and modified using ABAP Development Tools in Eclipse.

When working with CDS views, the Eclipse-based environment provides a range of functionalities that facilitate modeling, syntax highlighting, and validation. This includes an intuitive interface that allows developers to easily define the data model and its semantic layer, as well as to manage annotations that enhance the model’s usability.

The other repository objects mentioned are typically not confined to editing within the ABAP Development tools in Eclipse. For instance, database procedures and their proxies can often be managed through different database tools or via SQL scripting, while full-text indexes and external views might be handled through other interfaces or tools within the overall SAP ecosystem. Therefore, the significance of using ABAP Development Tools in Eclipse for CDS views underscores the importance of having an integrated development experience specifically tailored to leverage the advanced modeling capabilities of CDS in SAP HANA.