SAP ABAP on HANA

To start learning SAP ABAP on HANA, it's recommended to follow a structured roadmap that transitions from traditional ABAP to the new paradigm of "code-to-data". Key concepts include using the ABAP Development Tools (ADT) in Eclipse and leveraging HANA-specific features like Core Data Services (CDS) views and ABAP Managed Database Procedures (AMDPs).

Learning Roadmap for SAP ABAP on HANA

A recommended learning path typically involves these steps:

1. Learn Core ABAP: Ensure you have a solid foundation in basic ABAP programming concepts, as this remains the basis for all SAP development.

2. Understand SAP HANA Architecture: Learn about the in-memory computing engine, row vs. column store, and how the architecture change impacts performance and development.

3. Set Up Development Environment: Install and configure SAP HANA Studio and the ABAP Development Tools (ADT) in Eclipse.

4. Explore the Code-to-Data Paradigm: Understand the shift from bringing data to the application server to pushing code logic down to the database layer for enhanced performance.

5. Learn Enhanced Open SQL: Master the new Open SQL syntax which includes features like comma-separated fields and host variable escaping with the @ sign.

6. Master Core Data Services (CDS) Views: Learn to create and use CDS views for data modeling, including associations, annotations, and functions. They are a core technology in modern SAP development.

7. Implement ABAP Managed Database Procedures (AMDPs) and SQLScript: Learn to write database procedures directly in ABAP classes using SQLScript for complex calculations.

8. Explore SAP Fiori Integration & RAP: Understand how to integrate with SAP Fiori applications and learn the RESTful Application Programming Model (RAP) for building modern, high-performance applications.

9. Practice Performance Optimization: Learn how to use tools like the SQL Monitor and Code Inspector variants to optimize code for the HANA database.

10. Practice with Real-World Projects: Apply your knowledge by building end-to-end applications to gain practical experience.