Show a drawing of the Postgres database in a way meant to characterize its extensibility. It should be included in a presentation with a slide of a whitebackground. The image should be drawn in black and white. The extensibility should be shown by including several different types of hooks, including "Executor Hooks", "Planner Hooks", "Process Utility Hooks", Background Worker Hooks", "Table Access Methods", and "Index Access Methods". Do not misspell those.