SAP ABAP(Innovative company application programming) is really a programming language for SAP application. we do coding no matter underlying database. Once the evolution of HANA databases,each of the Oracle db has long been replaced by HANA DB. HANA db is column oriented and info will get stored in RAM ,the http://waylonhdamc.blog-a-story.com/200590/abap-on-hana-education-s4hana-training