revision resource

revision resource

1. maintainability

   • comments are helpful in code as it helps identify errors in you code. it also makes it easier to follow your code.
   • indents are useful aswell as it helps seperate pieces of code and organises it well

2. types of testing

   • iterative testing is a popular form of testing. this is when you test your code throughout writing it.
   • final testing however is when you finish your piece of code and go back over and check for any errors of exploits in the code

3. checks

   • presence check - make sure its there
   • length check - makes sure it is a certain amount of characters
   • format check - this check verifies the data inputted is the same at the past data inputted
   • range check - these are checks that check data that must fall in a certain range of numbers and this data has to be a number value
   • type check - this is used when for example a number value is used in a character value