KEY ELEMENTS OF AN APPLICATION

KEY ELEMENTS OF AN APPLICATION

1. ALGORITHMS

   • A series of instructions that are followed, step by step, to do something useful or solve a problem.
     • Baking a cake
     • Solving a maths equation using formulas
     • REPRESENTATION
       • FLOWCHARTS
         • A diagram that represents the process of data with the use of symbolising shapes
           • Circle/Oval
             • Start/End point of the the algorithm
           • Arrows
             • Directs the flow of the algorithm
           • Diamond
             • Indicates a decision to be made in the algorithm
           • Rhombus
             • Represents an input and an output
           • Rectangle
             • Represents a process within the algorithm
       • PSEUDOCODE
         • An artificial and informal language that helps programmers develop algorithms
       • DESK CHECKING
         • Allows user to test algorithm to see if it functions before it is even tested on a live application
       • DATAFLOW DIAGRAMS
         • A diagram showing the way data flows through a websites data system
           • DFDs are built using standardized symbols and notation to describe various entities and their relationships.