Producing robust programs

VALIDATION
1. range check
  1. input must fall into a specific range
    1. e.g. 6-12 for a password
2. length check
  1. input can't be too long or too short
  2. e.g. a name is unlikely to have more than 25
3. presence check
  1. an input must be entered
    1. e.g. entering a quantity when placing an order
4. format check
  1. input must be entered in a certain format
5. type check
  1. data entered must be of a specific type
  2. e.g. al caps or al lowercase
SANITISATION
AUTHENTICATION
1. the process of a user confirming that they are who they say they are
MAINTAINABILITY
1. purpose to ensure that a program can be easily maintained
  1. another programmer may wish to debug an error or improve code
2. includes using comments, indentation and sensible variable names

Resource summary

	Created by Muhammad Wilson over 5 years ago