... Structure of the Book ... 19 ... Acknowledgments ... 22 1.1 ... Define the Data Model of the Application ... 24 1.2 ... Implement the Data Model of the Application ... 27 1.3 ... Summary ... 51 2.1 ... Overview of CDS Models ... 54 2.2 ... Overview of CDS View Syntax ... 57 2.3 ... Key Fields ... 59 2.4 ... Cast Operations ... 61 2.5 ... Typed Literals ... 63 2.6 ... Case Statements ... 64 2.7 ... Session Variables ... 66 2.8 ... Client Handling ... 67 2.9 ... Union Views ... 69 2.10 ... Joins ... 76 2.11 ... SQL Aggregation Functions ... 82 2.12 ... Projection Fields ... 85 2.13 ... Parameters ... 86 2.14 ... Reference Fields ... 91 2.15 ... Conversion Functions for Currencies and Quantity Units ... 94 2.16 ... Summary ... 97 3.1 ... Define Associations ... 100 3.2 ... Expose Associations ... 102 3.3 ... Model Compositional Relations ... 103 3.4 ... Model M:N Relations ... 105 3.5 ... Project Associations ... 109 3.6 ... Use Associations in CDS Views ... 109 3.7 ... Use Associations in ABAP Code ... 120 3.8 ... Summary ... 121 4.1 ... Annotation Definitions ... 124 4.2 ... Effects of Annotations ... 135 4.3 ... Propagation Logic of Element Annotations ... 137 4.4 ... CDS Metadata Extensions ... 144 4.5 ... Active Annotations ... 148 4.6 ... Summary ... 149 5.1 ... Fundamentals of Access Controls ... 152 5.2 ... Mode of Action of Access Controls ... 156 5.3 ... Implementation Patterns for Access Controls ... 161 5.4 ... Test Access Controls ... 193 5.5 ... Summary ... 196 6.1 ... Projection Views ... 198 6.2 ... Service Definitions ... 201 6.3 ... Service Bindings ... 206 6.4 ... Testing Business Services ... 213 6.5 ... Summary ... 215 7.1 ... Implementation of a CDS Table Function ... 218 7.2 ... Application Scenarios ... 226 7.3 ... Aspects for Consideration ... 227 7.4 ... Summary ... 228 8.1 ... Application Architecture in SAP S/4HANA ... 232 8.2 ... Field Labels ... 235 8.3 ... Field Semantics ... 239 8.4 ... Foreign Key Relations ... 245 8.5 ... Text Relations ... 249 8.6 ... Composition Relations ... 252 8.7 ... Time-Dependent Data ... 255 8.8 ... Summary ... 256 9.1 ... Why a Virtual Data Model? ... 257 9.2 ... Lifecycle, Release, and Stability ... 259 9.3 ... Structure of the Virtual Data Model ... 270 9.4 ... Naming in the Virtual Data Model ... 277 9.5 ... Basic Interface View for the Sales Order ... 282 9.6 ... Tips for Finding Virtual Data Model Views ... 289 9.7 ... Summary ... 298 10.1 ... Analytics in SAP S/4HANA ... 299 10.2 ... Analytical Views ... 301 10.3 ... Analytical Queries ... 321 10.4 ... Analytical Infrastructure ... 348 10.5 ... Summary ... 351 11.1 ... Transactional Applications ... 354 11.2 ... Transactional Infrastructure in SAP S/4HANA ... 355 11.3 ... Transactional Object Models ... 358 11.4 ... Behavior Definitions ... 364 11.5 ... Transactional Service Models ... 442 11.6 ... Define Projection Behavior Definition ... 451 11.7 ... Runtime Orchestration ... 461 11.8 ... SAP Fiori and OData Consumption ... 466 11.9 ... Summary ... 479 12.1 ... Hierarchy Categories and Basics ... 481 12.2 ... Annotation-Based Parent-Child Hierarchies ... 484 12.3 ... CDS Hierarchies ... 492 12.4 ... Summary ... 510 13.1 ... Modeling Value Helps ... 512 13.2 ... Free-Text Search Functionality in OData Services ... 529 13.3 ... Summary ... 537 14.1 ... Extension Options ... 540 14.2 ... CDS Entity Extensions ... 541 14.3 ... Usage of CDS Entity Extensions ... 552 14.4 ... Summary ... 558 15.1 ... Fundamentals of the Test Double Framework ... 562 15.2 ... Test Sample Overview ... 563 15.3 ... Test Implementations of CDS Views ... 566 15.4 ... Test ABAP Logic with SQL Accesses to CDS Views ... 580 15.5 ... Test Code Generation Functions ... 583 15.6 ... Summary ... 587 16.1 ... Performance Aspects ... 589 16.2 ... Pitfalls ... 596 16.3 ... Troubleshoot Implementations of CDS Models ... 606 16.4 ... Troubleshoot Activation Issues ... 613 16.5 ... Summary ... 618 A ... CDS Annotation Reference ... 621 B ... The Authors ... 633