>>Apart from using QVDs, is there any way we can encrypt the data further?
If you believe QVD files to be encrypted, you are mistaken - QVD files are not encrypted and any QV/QS (including personal edition / desktop) can open the QVD to display the data. Confidential data in QVDs needs to be secured using normal file/folder access control.
>>What are different ways in Qlikview to Encrypt the data?
The data inside a qvw file is binary, and there is no public API for getting the data from a qvw, so I don't how well encrypted it may or may not be. Qlik offers row and column security using section access, applied when the user opens the document. On a server implementation, you can prevent users from downloading data and using binary loads of the QV document.
>>On what levels we can implement the encryption?
I am not sure what you mean.
Logic will get you from a to b. Imagination will take you everywhere. - A Einstein
Most likely, any software-based encryption tool is going to be too slow etc. and will likely cause issues with the platform. The only success of which I have ever heard has been with hardware-based encryption devices. That is the only option available at the moment that I would venture is going to be workable and perform well.
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