Key Definitions - 2.3

Question 1

Input Sanitisation

Answer 1

Process of cleaning up a user’s input so it’s in a suitable format ready for processing

Question 2

Validation

Answer 2

Process of checking the user has inputted data in the correct format e.g for a data it could be DD/MM/YYYY

Question 3

Contingency Planning

Answer 3

The process of having a ‘back up plan’ in case the original plan fails

Question 4

Misuse

Answer 4

When a user doesn’t use the program the way it was designed to be used

Question 5

Authentication

Answer 5

The process of ensuring a user has the rights/permissions to access a program e.g. by getting them to enter a username and/or password.

Question 6

Maintainability

Answer 6

This refers to ensuring the program can be easily updated, improved, and fixed

Question 7

Comments

Answer 7

Used within a program. They help briefly identify what a section of code does

Question 8

Naming Conventions

Answer 8

• A ‘rule of thumb’ programmers will use when writing in a specific language.
• They follow certain rules when naming identifiers such as use of lowercase/uppercase characters, underscores etc.

Question 9

Testing -

Answer 9

• The process of assessing whether a program works correctly and the way it should work.
• We aim to find ‘bugs’ and rectify them so the program is faultless

Question 10

Iterative Testing -

Answer 10

• A type of testing. Iterative testing is carried out throughout the development of the program.
• Multiple ‘mini tests’ are carried out on sections of code

Question 11

Final/Terminal Testing

Answer 11

• Final/terminal testing takes place once the program has been completed.
• It tests the whole program at the end of its development

Question 12

Syntax Error

Answer 12

• Means code has been incorrectly written and will stop the program from working

Question 13

Logic Error

Answer 13

• Code doesn’t stop the program from working but stops the program from working the way it should do

Question 14

Test Data

Answer 14

• The data that is selected to be used when testing a program.

Question 15

Normal Data -

Answer 15

This data is correct and should be accepted by the program

Question 16

Invalid Data -

Answer 16

Data is of the correct data type but outside of the requirements set

Question 17

Boundary Data -

Answer 17

On the edge of a range specified by the program and therefore should be accepted

Question 18

Erroneous Data

Answer 18

Data that is of the incorrect data type and therefore should be rejected.

Question 19

Defensive Design Considerations

Answer 19

• Input Sanitisation/Validation
• Contingency Planning
• Anticipating Misuse
• Authentication

Question 20

What does validation check and not check?

Answer 20

• Checks to see if a user has inputted in the right format
• Doesn’t check if it’s correct/true

Question 21

Authentication

Answer 21

The process of ensuring a user has the right permission to access a computer program e.g username and password checker