Foundation Degree IT Project Analysis Modelling and Design

Foundation Degree IT Project Analysis Modelling and Design Techniques (for reference)

Modelling It is an abstraction of the real world situation Technique to show the current or existing system as it is Often a diagram Different types of techniques based upon methodology, project aspect and project type Methodologies often share techniques Purpose is to help identify issues, resolve problems and indicate requirements *** 3 Richard Hancock 20/01/2022

Use Case Diagrams User interaction with a system Describes goals of the user, interaction between system and system behaviour Elements 4 Actors Use case Associations Richard Hancock 20/01/2022

Rich Picture 5 Richard Hancock 20/01/2022

Entity Relationship Diagram Relationships 6 One to Many to Many Richard Hancock 20/01/2022

Database Table Design Data dictionary Customer table Data Type Length Notes Customer. ID Number (6) Primary key Customer. Forename Text (50) Customer. Surname Text (50) Customer. Address Text (200) Customer. Phone Number (11) 7 Richard Hancock 20/01/2022

Business Model 8 Richard Hancock 20/01/2022

Network Diagram 9 Richard Hancock 20/01/2022

Structured English Describes programming logic with the convenience of natural language IF customer has a Bank Account THEN IF Customer has no dues from previous account THEN Allow loan facility ELSE IF Management Approval is obtained THEN Allow loan facility ELSE Reject ENDIF 10 Richard Hancock 20/01/2022

Decision Tree Are parents visiting? Yes No Tidy house Sunny Play tennis Rich Go shopping 11 What’s the weather like? Rain Windy Stay in Do we have any money? Poor Go cinema Richard Hancock 20/01/2022

Decision Table Red, Red/Amber, Green – Amber, Red Condition Entry Red Y Y N N Amber Y Y N N Green Y N Y N Go with caution X Stop X Call Police X 12 X X X X Richard Hancock X X 20/01/2022

Interface Designs Hand drawn Paper prototyping 13 Richard Hancock 20/01/2022

Navigation Routes Hierarchical diagram 14 Richard Hancock 20/01/2022

Summary Modelling is used to describe the current system Designs are used to describe the proposed system The techniques are often the same meaning that many of them can be used in both analysis and design processes Diagrams should come with some supporting text clarifying issues *** 15 Richard Hancock 20/01/2022

Resources Use Case Rich Picture Entity Relationship Business Process Structured English Decision Trees Decision Tables *** 16 Richard Hancock 20/01/2022

Questions. . . . are there any? 17 Richard Hancock 20/01/2022

End! 18 Richard Hancock 20/01/2022