Attached is 15.0.2.   Remember that the links/joins/fkeys are not real - 
  if you query monProcess and then query monProcessActivity, the rows 
may differ slightly as some SPIDs left and new ones came in....they are 
more indicators of relationships between the tables.  Color code should 
be kinda obvious:

Red = process
Pink = historical process
Purple = object/databases
Orange = locks
Gray = metadata (static)
Cyan = memory
Yellow = server level (devices, waits, engines, etc.)
Green = state/licensing