I need to make a "Subject Index" of all topics such as animals, houses, companies, shop products, people, music, etc etc... a general knowledge classification just like wiki.

Are there some standard open source indices of categories and classifications that i can download in table format to place on the server?

I cant find any information onit, and i only made my first database last week!

what must i do to get my websites category index up and running so it is a standard classification system used in books etc??