Top 25 Sap Hana Interview Question and Answer

1. What is SAP HANA?

SAP HANA is an in-memory, columnar database management system that allows for real-time data processing and analytics.

2. What is ABAP for SAP HANA?

ABAP for SAP HANA refers to the programming language used to develop applications that run on the SAP HANA platform.

3. What are the key features of SAP HANA?

Key features of SAP HANA include in-memory computing, advanced analytics, data virtualization, and data replication.

4. What is the difference between SAP HANA and traditional databases?

SAP HANA is an in-memory database, which means it stores data in RAM for faster processing, while traditional databases store data on disk.

5. What is the purpose of SLT (SAP Landscape Transformation)?

SLT is used for real-time data replication from SAP and non-SAP sources into SAP HANA.

6. What is a Calculation View in SAP HANA?

Calculation Views are used to define complex calculations and aggregations on data stored in SAP HANA.

7. What is the difference between an Analytic View and a Calculation View?

Analytic Views are used for reporting and analysis purposes, while Calculation Views allow for complex calculations and aggregations.

8. How do you debug a SAP HANA ABAP program?

You can debug an ABAP program in SAP HANA by setting breakpoints in the code and executing the program in debug mode.

9. What is the difference between Open SQL and Native SQL in SAP HANA?

Open SQL is a subset of the SQL language that can be used across different database systems, while Native SQL is specific to a particular database, such as SAP HANA.

10. How do you optimize performance in SAP HANA?

Performance in SAP HANA can be optimized by creating appropriate indexes, partitioning tables, using parallel processing, and optimizing SQL queries.

11. What is a secondary index in SAP HANA?

A secondary index is an additional index created on a column to speed up data retrieval for frequently accessed data.

12. What are SAP HANA views?

Views in SAP HANA are logical data containers that define how data from database tables is presented to the end users.

13. What is the use of SQLScript in SAP HANA?

SQLScript is a procedural language used for complex data manipulation and logic processing in SAP HANA.

14. How do you transport SAP HANA objects between systems?

SAP HANA objects can be transported using the SAP HANA transport mechanism, which involves creating transport requests and moving objects between systems.

15. What is the role of SAP HANA Live?

SAP HANA Live provides pre-defined content and virtual data models that allow real-time reporting and analytics on SAP HANA data.

16. What is the difference between SLT and Data Services in SAP HANA?

SLT is used for real-time data replication, while SAP Data Services is an ETL (Extract, Transform, Load) tool used for batch data integration.

17. How do you create an SAP HANA table?

You can create an SAP HANA table using the CREATE TABLE statement in Script.

18. What is the purpose of an Attribute View in SAP HANA?

Attribute Views are used to define the attributes and hierarchies of master data for reporting purposes.

19. What is the difference between Star Schema and Extended Star Schema in SAP HANA?

Star Schema is a data modeling technique with a central fact table and multiple dimension tables, while Extended Star Schema includes additional tables for master data and hierarchy information.

20. How do you monitor SAP HANA system performance?

You can monitor SAP HANA system performance using various tools like SAP HANA Studio, SAP HANA Cockpit, and SQLScript-based monitoring views.

21. What is the purpose of the SAP HANA XS Engine?

The SAP HANA XS Engine allows you to develop and deploy lightweight, server-side applications using JavaScript and HTML.

22. How do you handle exceptions in SAP HANA ABAP?

Exceptions in SAP HANA ABAP can be handled using TRY-CATCH blocks, where you can catch and handle specific exceptions.

23. What is the role of the SAP HANA Index Server?

The SAP HANA Index Server is responsible for processing and executing queries, managing data storage, and optimizing query performance.

24. What is the use of Calculation View in SAP HANA?

Calculation Views are used to define complex calculations, aggregations, and transformations on data in SAP HANA.

25. How do you load data into SAP HANA from external systems?

Data can be loaded into SAP HANA from external systems using various methods like SAP Data Services, SAP HANA Smart Data Integration, or by using flat files and SQL statements.