One of the reasons people look at implementing BI solutions is to have a single source of truth. The technological advancements have made data spread across different applications. It’s important for the consultant to understand all the data sources. There could be Excel sheets, ERPs, cloud CRM, social media applications, big data, and legacy applications.

Qlik can usually connect to most of the data sources, but a recheck is important to ensure that it does. If a direct connection is not possible, alternate ways need to be explored. It could be as simple as taking CSV dump from that data source, or it could be using the SDK to write a custom connector.