System Planning (Preliminary Investigation Overview) System Analysis and Design System Planning (Preliminary Investigation Overview) - Mr. Ahmad Al-Ghoul

System Analysis and Design System Planning Learning Objectives Discuss how to plan preliminary investigation Describe the first two steps in a preliminary investigation, understand the problem or opportunity, and define the project scope and constraints Avicenna System Analysis and Design System Planning

Preliminary Investigation Overview Preliminary investigation used to study the system request and recommend specific action Analyst through interacting with managers and users gathers facts about the problem or opportunity, project scope and constraints, project benefits, and estimated development time and costs The product of the preliminary investigation is a report to management Avicenna System Analysis and Design System Planning

Preliminary Investigation Overview Interaction with Managers and Users Let people know about the investigation and explain your role Employee attitudes and reactions are important and must be considered Be careful in your use of the word problem Question users about additional capability they would like to have Avicenna System Analysis and Design System Planning

Preliminary Investigation Overview Planning the Preliminary Investigation During a preliminary investigation, a systems analyst typically follows a series of steps The exact procedure depends on the nature of the request, the size of the project, and the degree of urgency Avicenna System Analysis and Design System Planning

Preliminary Investigation Overview Step 1: Understand the Problem or Opportunity Determine which departments, users, and business processes are involved System request in general does not revel the underlying problem, but only symptom A popular technique for investigating causes and effects is called a fishbone diagram Avicenna System Analysis and Design System Planning

Preliminary Investigation Overview Step 1: Understand the Problem or Opportunity fishbone diagram An analysis tool that represents the possible causes of a problem First states the problem as main bone Sub-bones represent possible causes of the problem In each sub-bone analyst identifies possible causes, draws them as horizontal sub-bones Avicenna System Analysis and Design System Planning

Preliminary Investigation Overview Step 2: Define the Project Scope and Constraints Project scope Project creep Constraint Avicenna System Analysis and Design System Planning

Preliminary Investigation Overview Step 2: Define the Project Scope and Constraints Determining the project scope means defining the specific boundaries, or extent, of the project Define project scope by creating a list with sections called must do, should do, could do, and won’t do Projects with very general scope called project creep A constraint is a requirement or condition that the system must satisfy or an outcome that the system must achieve System constraints also define project scope Avicenna System Analysis and Design System Planning

Preliminary Investigation Overview Step 2: Define the Project Scope and Constraints When examining constraints, analyst should identify their characteristics Present versus future Internal versus external Mandatory versus desirable Regardless of the type, all constraints should be identified as early as possible to avoid future problems and surprises Avicenna System Analysis and Design System Planning

System Analysis and Design System Planning Sequence Summary Preliminary investigation used to study the system request and recommend specific action The first two steps in the preliminary investigation are to understand the problem or opportunity; define the project scope and constraints. Avicenna System Analysis and Design System Planning

System Analysis and Design System Planning Sequence Summary In this Sequence we have Defined and described the preliminary investigation Discussed how to plan preliminary investigation Described the first step in preliminary investigation that describe how to understand the problem or opportunity Described the fishbone diagram Described the second step in preliminary investigation that define the project scope and constraints Avicenna System Analysis and Design System Planning

System Analysis and Design System Planning Reference [1] System Analysis and Design, Sixth Edition (Chapter 2 ) Authors: Gary B. Shelly, Thomas J. Cashman and Harry J. Rosenblatt , Publisher: SHELLY CASHMAN SEWIES. Avicenna System Analysis and Design System Planning