The authors of »Core Data Services for ABAP«

Renzo Colle

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Renzo Colle is currently responsible for the programming model of SAP S/4HANA in the central architecture group. He studied business mathematics at the Karlsruhe Institute of Technology ( and has worked at SAP for more than 24 years in a wide variety of areas and roles. He started his career at SAP as a developer in strategic customer development. In SAP Business ByDesign, he was responsible for logistics and was the lead architect of the SAP ByDesign platform for cloud applications. As the inventor of the Business Object Processing Framework (BOPF) and the lead architect of the ABAP RESTful application programming model, he has worked on model-driven software development and transactional applications for more than 20 years. Further information about Renzo can be found at

Ralf Dentzer

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Ralf Dentzer has been working for several years in the central architecture group of the SAP S/4HANA suite with a focus on the use of core data services in SAP S/4HANA. He joined SAP more than 20 years ago. He developed HR applications for SAP R/3, SAP ERP, and SAP Business ByDesign. After that, his tasks shifted to questions of overall architecture for new solutions. Ralf studied mathematics and received his doctorate from the University of Heidelberg. He is married and has two sons.

Jan Hrastnik

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Jan Hrastnik is a member of the SAP S/4HANA suite’s architecture team, where he focuses on the virtual data model and the use of core data services in ABAP applications. He has worked in various SAP development areas for more than 15 years. At the beginning of his career, he supported numerous customer projects in the automotive industry. Subsequently, he worked in the supply chain management development of SAP Business ByDesign. Jan’s work initially focused on developing the master data required for the production processes, before he took on overarching expert tasks in central architecture topics. He then worked on the SAP SuccessFactors Employee Central solution and native SAP HANA application development.
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  • NewCover of Core Data Services for ABAP

    Core Data Services for ABAP

    Renzo Colle, Ralf Dentzer, Jan Hrastnik

    754 pages, hardcover

    If you’re developing ABAP applications, you need CDS expertise. This book is your all-in-one guide, updated for SAP S/4HANA 2023! Start by learning to create and edit CDS views. Walk through CDS syntax and see how to define associations and More about the book

    from $84.99


    E-book | Print edition | Bundle
    • Develop data models with ABAP core data services
    • Create and extend models for analytical and transactional applications
    • Define annotations and associations, implement access controls, work with hierarchies, and more