@Lundin I'd guess that cadence is an umbrella tag for anything that Cadence Design Systems makes. They make Virtuoso (an IC design software). They make Allegro (a PCB design software on a tier above OrCAD and Altium).
@JohnRennie By the way, you called it a MOSFET. The example doesn't mention "MOSFET", and the symbol looks like a JFET. Are you sure that it's a MOSFET and not a JFET ?
Oops, that was not a deliberate action. It's just a FET. My nephew has asked me this on the grounds I'm a physicist and should know such things. Sadly no physics course I ever did covered FETs.