SDLC Exam Question

SDLC Exam Question

1. Feasibility

   • Possible results
     • Is it cost effective? This would drastically change how the management would consider the new system since if they are going to lose money it will be detrimental to the buisness
     • Is it able to be completed in the specific time? This is because the management may have an idea on when it is meant to be created by and if it cannot fit into the deadline then it may be too expansive.
     • Is the completed system going to improve the efficiency of the system, the feasibility study will check whether it will be a worth while increase in efficiency to pay for.
     • Is it Economically feasible? Will the system fit within the budget they have set?

2. Analysis

   • Comparing
     • Individual Analysts
       • Saves money and work space because there is only one person
       • Increases the workload for the analyst because they are doing it alone, this could lead to rushed work and so innaccuracies or people cutting corners
     • Team Of Analyists
       • This will cost more since they are paying for a whole team to analyse their system
       • It will be faster
       • It will be more detailed
       • More minds will produce more ideas allowing greater variety
   • Documentation After Analysis
     • Input requirements/ Processing requirements/ Output requirements Storage/ requirements Hardware/ requirements Software/ requirements It is agreed by the client and analyst.
   • Investigation
     • What processing the system does
     • What documents are involved (forms for entry, invoices, reports etc.)
     • What data is stored, input processed and output
     • Data flows – who sends and receives messages and documents and when
     • Problems experienced by the users e.g. delays

3. Design Documentation

   • Outlines: Input Design and Outputs
   • Algorithms
   • Data Structure
   • Data Flow Diagrams
   • Entity Relationship Diagram