Qlik QVDs allow for the idea of having a (pre-production) App before the (production) App, intended to extract data from a source, do transformations on it, and load that data into a QVD for production to use
This separates each step of the ETL process
Practical Framework
- Load data from source
- Save data as QVD
- Load data from QVD
- Transform data
- Save data as QVD
- Load data from QVD