Not really. Probably the most important point is to collect all requirements before starting. Here you will find many very good explanations how to Get started with developing qlik datamodels.
Is it mandatory to maintain a star schema/ snow flake schema at QlikView end I.E. Have all the measures defined in the fact surrounded by dimensions if you have a lot of data sources or can you just create the data Model based on common fields. Do you need to follow a mandatory rule while the model is getting created based on these common fields.
In general many other datamodels will also work and a star-scheme isn't mandatory but it's recommended because it is most often the best compromize between between load run-times, complexity and performance.
