Some Q/A about SAP HANA
1. Why is HANA fast as compared to other databases?
Ans: HANA is an in-memory database and doesn’t rely on reading data from disk. The access to data is instantaneous. This is one of the primary reason why it is fast. Another reason is that it uses several compression logic to optimize storage of data. A database which may be around 10 GB in usual RDBMS may occupy 5 GB in HANA.