When you are creating a new project, there are three categories available to choose from based on your primary focus and needs:
Start from Data
When your new project starts from the data that you need to “bake” before it is ready to be presented. In case you need to process, aggregate or re-structure the data first, then you should go with “Start from Data”.
Start from Code
In some cases you have the code or presentation first, then you connect it to the data at later stages. Imagine that you have the typical reporting tool, that you deploy, map the fields to the actual DB in place, and you got it - a shiny new report is ready.
Start from Report
Lastly, you may have the presentation, but you need to connect it to the data. In that case, you will start from a report - assuming that the data will be connected gradually.