How do you erase the partition TABLE of a drive?

New(ish) to Linux, not new to hardware. Got a new NAS which is to be hosted via linux. Before that I'm faffing about with the hardware, and things I will never get to do otherwise. Live distros are so lovely. I've tried around 4 so far. Anyway, I'm also playing around with the storage drives. There's a bunch of file systems and partition types to explore - swap partitions are a puzzling idea to me, but whatever. I can play around with those easy enough. However I could not find a way to actually delete the partition **TABLE**, just change it. I tried both fdisk and gparted. How do you delete the partition table?