software design and development

Question 1

development of software stages

Answer 1

analysis
design
implementation
testing
evaluation

Question 2

array

Answer 2

used to store list of items which have same data type

Question 3

conditional statement

Answer 3

statement either true or false eg IF, THEN, ELSE

Question 4

simple condition

Answer 4

rely on condition being true or false

Question 5

complex condition

Answer 5

rely on 2 or more conditional statements being true or false eg AND, NOT, OR

Question 6

logical operators

Answer 6

AND, OR, NOT

Question 7

select case

Answer 7

used when program requires too many IF statements, allows diff instructions to be selected depending on variable value

Question 8

iteration

Answer 8

process where program repeats group of instructions 2 or more times - known as repetition or looping, efficient as code doest need to be repeated

Question 9

fixed loop

Answer 9

when group of instructions are repeated a pre-determined number of times

Question 10

conditional loops

Answer 10

group of instructions repeated until or while condition is true

Question 11

nested loops

Answer 11

loop placed inside another loop completely

Question 12

pre-defined functions

Answer 12

already built in program language which performs calculation - used to return single item of data

Question 13

standard algorithms

Answer 13

algorithms used in program various times

Question 14

input validation

Answer 14

program repeatedly asks for an item of data to be entered until its within possible range of values

Question 15

running total

Answer 15

used to find sum or calculate average of numbers

Question 16

syntax error

Answer 16

misspelt command words or missing brackets - identifies when program is translated

Question 17

execution errors

Answer 17

incorrect calculation

Question 18

logic error

Answer 18

mistake in code which causes error in calculation - answer incorrect

Question 19

normal

Answer 19

correct results expected in range of values

Question 20

extreme

Answer 20

lies on boundaries of possible data

Question 21

exceptional

Answer 21

unexpected data most likely to crash software

Question 22

fit for purpose

Answer 22

fulfils requirements stated in analysis stage
wether or not it solves problem it was supposed to solve

Question 23

explain why it may be necessary to return to the design stage

Answer 23

logic errors were found at a later
stage or the program is not fit for purpose

Question 24

how indentation is used to make the code above more readable

Answer 24

to clearly show what code is
inside the if statement

Question 25

how SQL statement could be tested

Answer 25

comparison between expected results and actual results

Question 26

two implications of the General Data Protection Regulation

Answer 26

- data must be accurate - store data securely - data can’t be shared without members permission - must declare purpose data is used for

Question 27

why a conditional loop would be used when writing code

Answer 27

- don’t know how often the loop will execute - keeps looping until conditions are met

Question 28

why a pre-defined function would be used

Answer 28

- no need to write code - error free (no need to test) - re-useable