How to Specify the Number of Rows to Generate?

By default, 1000 rows are generated for a table. You can change this default in the Project settings dialog. When you change the default number of rows to generate in the Project settings dialog and you close this dialog, you will be asked if you want to change this number for all tables in the project or for tables that had the same number as the old default.

You can also set the number of rows to generate for each individual table. You can do that in the table settings pane.