I am developing since one year and half a big database for a company, in Italy, and this DB has reached high dimensions.
It has thousands of scripts, hundreds tables, lot of relations.
Most big table has more than 150.000 records. It is used via desktop on MAC OSX, PC Win, and especially by technicians outside by Filemaker GO.
I can say that this is largest database I have ever worked in FileMaker.
What is your largest project ?