My company (engineeing and construction) has 2 different seed files, one for chemical based projects and one for life sciences. The main benefit is the standardization of instrument data sheets. Tag format is changed for each project. DDP and hook-ups are seeded as well. The seed i s updated...
INtools has an Import Utility that works best from Excel spreadsheets. I would not recommend manipulation of the Oracle database because there are macros that keep the different relations correct.