1.3.4

• Web technologies


  • HTML
  • CSS
  • JavaScript
• Search engine indexing


  Process of building an index of web pages by web crawlers/spiders to determine the order in which web pages are displayed in search results
• PageRank algorithm


  Algorithm used by search engines to rank web pages based on the number of incoming links and the PageRank of the pages linking to it
• PageRank algorithm


  1. PageRank(x) = (1-d) + d[(PageRank(T1) ÷ Count(T1)) + ... + (PageRank(Tn) ÷ Count(Tn)]

  2. Where PageRank(x) is the page rank of page x, Count(Tn) is the total count of outbound links from a webpage n and d is the damping factor, usually set to 0.85
• Server side processing


  When a client sends data to a server for it to be processed, with no information processed on the client computer
• Server side processing


  • Does not require plugins
  • Can perform large calculations much faster than clients
  • Not browser dependent
  • More secure
• Client side processing


  When a client processes data on a local device, with all information processed on the client computer
• Client side processing


  • Webpage can immediately respond to user actions
  • Executes quickly
  • Gives developers more control over the behaviour and look of the website