computer science

• What is input sanitisation

  Removes any unwanted characters that have been entered into a program
• What is validation

  Checks if the data meets certain criteria before passing it through the program

  
• The following validation checks

  Presence check ~ checks that data has been entered

  Length check ~ checks the data is the correct length

  Range check ~ checks the data is within a set range

  Format check ~ checks data if it is in the correct format

  Check check ~ checks numerical data is entered correctly

  Look up table ~ checks against a table of accepted values
• What is authentication

  Where a program confirms the identify of a user before giving them acess to full program

  
• What is maintainability

  Code that has been well maintained is easy to edit without causing errors
• What is comments

  Helps the programmer to understand the code as well as appropriate names for variable and sub program
• What is a indentation 


  Allows the programmer to easily see which code falls within the selection
• What is a robust programming

  Protection against unexpected user inputs