Question:
Should a data structure be created beforehand (for example, a table in the SQL Server) so that I can start working with the Database in E3?
Solution:
Not necessarily. If you are working only with E3’s internal variables (or variables that are readable by E3, such as a PLC), you can create this initial structure directly in E3 with Create DB Structure button, regarding the Historic:
If you want to import a table that already exists, this is also possible. However, if you’re starting from scratch, the suggestion above is the easiest way.