Online Documents Callum Pilling

Online Documents Callum Pilling

1. compressing files

   • uploaded – When you upload a fi le you move it from one system to another system. For example, you can upload fi les from your computer to a web page.
     • download – This is when you move fi les from a system to your personal computer.
       • Algorithms – A mathematical step-by-step sequence used to work out calculations or carry out instructions.
   • Zip files are basically stores of data files which may have been compressed. There are many different algorithms for doing the compression – with most compression software supporting several of these.
     • The last item in a zip fi le is an index, which shows the placement of each of the data fi les and allows other fi les to be added. Quite often the zip fi le will also contain some program code (a sequence of instructions) to allow the fi les within the zip fi le to be unzipped (known as self-extracting fi les).

2. The advantages of using online software

   • The biggest advantage of using online document software is that you can allow many people to share a version of a document and work on it at the same time as other people (known as collaborative working). You can also access content
     • • anywhere there is an available internet connection
       • • via different devices (e.g. PC, smartphone, tablet
         • • on different operating devices (e.g. Windows ® and Mac).
   • Online documents can also have automatic backup. Backing up fi les means that you save a copy of the fi le at a known point in time.
     • This means that you can always go back to that version if you lose or corrupt the present version.
       • Some software programs will automatically make a copy of the file you have open and are working on at set time intervals.
         • In Microsoft ® Word ® you can set how often you would like the fi le to automatically backup (every 30 minutes, every 60 minutes, etc). Automatic backup of online documents is just an extension of this concept.