Core Data Services (CDS) is a next generation data modeling tool introduced by SAP to define data models on the database server rather than the application server for SAP HANA applications. CDS offers conceptual modeling, built-in functions, and extensions beyond traditional data modeling. Originally only available in SAP HANA, CDS can now also be implemented in SAP NetWeaver AS ABAP. CDS includes data definition, query, manipulation, and control languages and allows a code-to-data paradigm where data models are defined as views in the ABAP dictionary and consumed via Open SQL.