This book introduces ABAP Core Data Services. CDS is part of SAP's new ABAP development paradigm. It is important for all SAP developers to learn Core data services and this book aims to ease the process of learning CDS.The book is divided into five chapters. Each chapter focuses on a specific function and provides examples relating to it.Chapter 1: Introduction to Core Data ServicesChapter 2: CDS Modelling concepts and SyntaxChapter 3: Access ControlChapter 4: CDS View extensionChapter 5: Create a List Application with CDS Views