Unit 4 - Simple error handling techniques

Question 1

What is data validation ?

Answer 1

Carried out by a computer when data is entered, it makes sure its sensible and within acceptable limits

Question 2

Whats a presence check ?

Answer 2

Ensures the user has not left the field blank

Question 3

Whats a range check ?

Answer 3

Ensures the data entered is in the correct range. Make us of upper and lower boundaries

Question 4

Whats a length check ?

Answer 4

to ensure the data entered does not exceed a certain number of characters or is more longer than a certain amount

Question 5

Whats a type check ?

Answer 5

to ensure the data entered is the correct data type

Question 6

Whats a format check ?

Answer 6

used to endure that data entered is in the correct format. This means the data must conform to a pattern

Question 7

Whats an execution error ?

Answer 7

they are detected during the program execution and will cause the program to crash. e.g division by 0

Question 8

What is a logic error ?

Answer 8

arise in programs that compile and run without error . the output does match the output expected.

Question 9

What is debugging ?

Answer 9

the process of detecting and correcting or removing errors from the code

Question 10

What is exception or error handling ?

Answer 10

the process where a program will attempt to deal with an error generated at run time so that the program does not crash