The basics of tables is: Rows & Columns. aka R.C. Rows are run horizontal and Columns vertical. At the top of every col is a Header. Just as ever ro starts with an id Key. Do not though that even though we begin with a square/rectangular flat object, don't be fooled. All Tables run round robin, picket fence, snake, (just to name a few). And continues from there. Level of complexity is usually dependent upon the technology and security. Also on the skill of the writers and the language its being coded in. One could say its quit the convoluted code.