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 white background. The image should be drawn in black and white. The extensibility should be shown by including several different types of hooks and access methods. You should include some text describing those hooks and access methods. Make sure you use the following text in quotations, but only use each text once in the picture and spell them exactly as I give it: "Executor Hooks", "Planner Hooks", "Process Utility Hooks", Background Worker Hooks", "Table Access Methods", "Index Access Methods".