How can I prepare myself for SAP HANA interview?
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How can I prepare myself for SAP HANA interview?
Answer 1
Question 1. Mention What Is Sap Hana?
Answer :SAP HANA stands for High Performance Analytical Appliance- in-memory computing engine. HANA is linked to ERP systems; Frontend modeling studio can be used for replication server management and load control.
Question 2. Mention The Two Types Of Relational Data Stored In Hana?
Answer :The two types of relational data stored in HANA includesRow StoreColumn Store
Question 3. Mention What Is The Role Of The Persistence Layer In Sap Hana?
Answer :SAP HANA has an in-memory computing engine and access the data straightaway without any backup. To avoid the risk of losing data in case of hardware failure or power cutoff, persistence layer comes as a savior and stores all the data in the hard drive which is not volatile.
Question 4. Mention What Is Modeling Studio?
Answer :Modeling studio in HANA performs multiple task likeDeclares which tables are stored in HANA, first part is to get the meta-data and then schedule data replication jobsManage Data Services to enter the data from SAP Business Warehouse and other systemsManage ERP instances connection, the current release does not support connecting to several ERP instancesUse data services for the modelingDo modeling in HANA itselfessential licenses for SAP BO data services.
Answer 2
Kumaraswamy M
1. What is SAP HANA?
SAP HANA is an in-memory computing engine (IMCE) used for real-time processing of huge volumes of data and building and deploying real-world applications. Adopting the row-based and column-based DB technology, SAP HANA is an advanced relational DB product serviced by SAP SE. With this high-performance analytic (HANA) system, the big data exists on the main memory and not on the hard disk. It replaces the onus of data maintenance separately on the legacy system and simplifies the tasks of administrators in this digital world.
2. Explain the column and Row store in HANA?
HANA supports both type of data store in database. Row store is used when you need to use Select statement and no aggregations are performed.
Column store is used to perform aggregations and HANA Modeling is supported only on Column based tables.
3. Which companies are providing SAP HANA hardware appliances?
There are total 11 vendors for SAP HANA hardware appliances. Most common are –
- Dell
- IBM
- HP
- Cisco
- Lenovo
4. What is the use of SAP HANA studio?
HANA studio is an eclipsed based tool and provides support for development and administration in HANA system. You can perform HANA Modeling on the top of tables in database, Data provisioning, HANA Administration and various other activities using HANA studio.
SAP HANA Studio client is available for Windows XP, Windows Vista, and Windows 7 for 32 bit and 64 bit operating system.
5. What do you understand by SAP HANA In-Memory Computing Engine IMCE?
In-Memory concept of SAP HANA means that all the data is stored in RAM memory. A conventional database transfer data from memory in 5 milliseconds however SAP HANA In-memory takes 5 nanoseconds to read data.
SAP HANA uses multicore CPU architecture and stores data in row and column based storage in HANA database.
