SDD

• what are all the stages of the development process 


  Analysis

  design

  Implementation

  Testing

  Documentation

  Evaluation
• What is the analysis stage


  When programmers look at a program and decide exactly what must be included in the program to solve the problem
• describe inputs


  the range and type of data to be entered into the program with any relevent input validations to be included
• describe the process


  what the program will do with the data entered
• describe the outputs


  what the program must produce when it runs
• describe input validation


  this is included in the code of the program so the data is repeatedly check to ensure its sensible
• describe the design stage


  in this the programmer will plan how they are going to solve the program given. Data types and data structure are often used.
• what are data types


  character

  string

  interger

  real

  boolean
• how is the design shown

  Structure diagrams

  Flowcharts

  Pseudocode
• describe structure diagrams


  Goes left to right

  Loops are shown in ovals
• what is a flowchart


  normally uses arrows

  top to bottom

  loops shown in arrows
• what is pseudocode


  text-based method of designing a program
• What is a logical operator

  AND

  OR

  NOT
• what is a condtional loop

  a loop that repeats until what you set it to do is done
• What is a fixed loop


  A loop that repeats a fixed number of times
• what is a normal data test


  data within the acceptable range
• what is extreme data


  data on the edge of the range of data, but still acceptable
• what is exeptional data testing

  invalid data
• what is syntax error


  an error resulting from breaking the rules of the language
• what is a logical error


  an error that produces incorrect results but doesnt stop the program running
• what is the evaluation stage


  When programmers look at the solution created and consider how good the program is
• what is considered in the evaluation stage


  fitness for purpose

  efficient use of coding constructs

  robustness

  readability
• what to write when writing evaluation of fitness for purpose

  each thing the program was required to do

  
  

  if it does each thing

  
  

  how you know if it does those things(refer to testing)
• What is efficient code


  ensure there is no innecessary use of the CPU or RAM
• what is robust program


  a program that does not crash easily
• how do you make a robust program


  have input validations so it doesnt crash due to invalid input
• what are the key points of readability


  Meaningful identifiers

  Internak commentary

  Indentation

  White space
• what is internal commentary


  info about what the code does
• what are meaningful identifiers


  names of variables, arrays and subprograms. should tell what they hold or do
• what is indentation


  use of tab to indent code within loops or if to make then more obvious
• what is white space


  using return key to add blank lines to make it easier to read