title: Organize database for online curses
body: <p>I'm charged to create a website, where the administrator can add new chapter, articles titles and subtitles (and maybe sub subtitles...etc),</p>
  
  <p>I've thought of creating parent-child tables:</p>
  
  <blockquote>
    <p>1-Curse(N_curse,title,intro,date)<br/>
    2-chapter
    (N_chapter,N_curse,Title,intro) (where
    curse is parent of chapter)<br/>
    3-title(N_title,N_chapter,intro,text)
    (where title is chapter's child)<br/>
    4-subtitle(N_subtitle,N_chapter,intro,text)
    (where subtitle is title'child) <br/>5-...<br/></p>
  </blockquote>
  
  <p>and so on.</p>
  
  <p>But I think that this is not a practical whay to define a such n-tree database, so what's the solution to respect open use for every subtitle added by the administrator??? thank you</p>