SAP Hana Questions

Hello Friends ,

Hope you all doing good . I need help answering these questions please.

1)How can you evaluate the actual speed of a calculation within a DB?

2) how to add external attriibute ?

3)How do you verify the quality of hana ?

4) What needs to be done if you have to report a calculated attribute based on a Store Open date to find

how many stores were open on a selected day?

5)How to check the time spent for a calculation in hana DB?

6) What are the advantages of BO Analytics ?

7) Benefits of BO explorer?

Thanks a lot.