Certainly! Here are some interview-related questions and answers related to ABAP on HANA in SAP:
1. Basic Concepts:
Question: What is ABAP on HANA?
Answer: ABAP on HANA refers to the use of ABAP (Advanced Business Application Programming) programming language in conjunction with the SAP HANA database. It involves optimizing ABAP code to leverage the performance benefits of the SAP HANA in-memory database.
2. Performance Optimization:
Question: How can you optimize ABAP code for better performance on HANA?
Answer: Performance optimization for ABAP on HANA involves techniques such as using native SQL, reducing database roundtrips, leveraging HANA-specific features like CDS views, and avoiding unnecessary calculations in ABAP code.
3. Use of CDS Views:
Question: Explain the role of Core Data Services (CDS) views in ABAP on HANA.
Answer: CDS views in ABAP on HANA provide a way to define and consume semantically rich data models. They enable the creation of database-independent data definitions and can be used for code pushdown to HANA for better performance.
4. Code Pushdown:
Question: What is code pushdown in the context of ABAP on HANA?
Answer: Code pushdown refers to the strategy of pushing data-intensive operations to the HANA database instead of performing them within the ABAP application server. This helps in leveraging the processing capabilities of the HANA database.
5. HANA Artifacts:
Question: Name some HANA-specific artifacts used in ABAP development.
Answer: HANA-specific artifacts include CDS views, AMDP (ABAP Managed Database Procedures), and Open SQL enhancements for HANA.
6. AMDP (ABAP Managed Database Procedures):
Question: What is AMDP, and how is it different from traditional database procedures?
Answer: ABAP Managed Database Procedures (AMDP) are database procedures defined in ABAP classes. They allow for seamless integration of native SQL and ABAP code. Unlike traditional database procedures, AMDPs are defined within the ABAP Dictionary and are part of ABAP development objects.
7. SQLScript in AMDP:
Question: How do you use SQLScript within ABAP Managed Database Procedures?
Answer: SQLScript is embedded within AMDP methods using the EXEC SQL ... END statement. It allows developers to write native SQL code directly within the AMDP method for better performance.
8. Data Migration:
Question: Explain the considerations for data migration in ABAP on HANA.
Answer: Data migration in ABAP on HANA involves using tools like SAP LT Replication Server (SLT) or SAP Data Services. It's crucial to consider data cleansing, transformation, and the optimization of data models during migration.
9. Transporting ABAP on HANA Objects:
Question: How do you transport ABAP on HANA objects between systems?
Answer: ABAP on HANA objects, including CDS views, can be transported using the standard SAP transport mechanism. This involves creating a transport request and including the relevant objects in the request.
10. Debugging Techniques:
Question: Describe the debugging techniques available for ABAP on HANA.
Answer: ABAP on HANA provides advanced debugging features such as SQLScript debugging, SQL performance analysis tools, and the ability to analyze HANA plan visualization for SQL queries.
These questions cover various aspects of ABAP development in the context of SAP HANA. Depending on the specific job role and requirements, interview questions may vary, so it's advisable to be well-prepared for a range of topics related to ABAP on HANA.