Examples of Info Systems Put Into Practice

Today we were looking at different examples of Information Systems. We used Mark Books as an example. We also created using Microsoft Excel a spreadsheet of wages. This was another form of Information Systems.

We also learnt the difference between Absolute and Relative Reference.
Absolute Reference refers to an absolute point that won’t change. This sign $ is critical, it tells the spreadsheet what you are doing without it, or it becomes relative reference.

Relative Reference is when an item is moved or the relationship to it has changed.
Like in a spreadsheet, a cell with a relative reference changes its formula when copied elsewhere.