Indira Gandhi National Open University presents
A video Lecture Course: System Analysis
SYSTEM INVESTIGATION
b what is system investigation ? It is another term for requirement analysis requirement analysis
WHAT IS REQUIREMENT ANALYSIS? b analysis of the needs of the user b study of the current system b wish list
IMPORTANCE OF REQUIREMENT ANALYSIS b A builder builds a house only after studying the land and it’s laws...
IMPORTANCE OF REQUIREMENT ANALYSIS b A doctor operates only after proper diagnosis and a battery of tests...
SUCCESSFUL PROJECT TEAMS SPEND.. b 50 % of time & effort on analysis b 30 % of time & effort on design b 20 % of time & effort on development
YOU HAVE TO BE …. b … a detective to dig out potential and existing problems...
YOU HAVE TO BE... b A charmer able to deflect antagonism
ASKING QUESTIONS... b Whom to ask ? b What information to seek ? b Why is it required ? b When to ask ? b Where to ask ?
WHOM TO ASK ? b should we question the chairman or the marketing manager or the security guard ?
ORGANISATIONAL CHART
NEUMANN-HADASS MODEL STRATEGIC PLANNING (SENIOR MGMT) MGMT. CONTROL (MIDDLE MGMT) OPERATIONS CONTROL (JUNIOR MGMT)
WHOM TO ASK ? b preparing a bill - junior management b discounts to customers - middle management b customer profile for next 5 years - senior management
WHAT INFORMATION TO SEEK ? b each system has 8 basic characteristics which we have to study
SYSTEM CHARACTERISTICS b goals - purpose of the system b Inputs - resources used b outputs - results achieved b boundaries - scope of the system
SYSTEM CHARACTERISTICS b environment - external factors b components - processing details b interrelations - links b constraints - limitations
SYSTEM CHARACTERISTICS PAYROLL PROCESSING Attendance Leave Tax Payslips PF
SYSTEM CHARACTERISTICS b Goals - printing payslips b Inputs - attendance, leave details b Outputs - payslips, PF register b Boundaries - payroll processing department
SYSTEM CHARACTERISTICS b Environment - tax laws b Components & Interrelations - payroll processing programs b Constraints - inputs available only 2 days before processing
WHY IS THAT REQUIRED ? b crux of system investigation b not to accept anything at face value b spirit of inquiry
CHECKING FOR REDUNDANCY PO Finance Receiving Stores Customer Purchase Records (2)
WHEN ASKING WHY, REMEMBER b you will not be popular b you will have to dig deeper and find real reasons
Indira Gandhi National Open University presents
A Video Lecture Course: Data Structure & Algorithms
Presenter Alka Joglekar
Set Raghav Mishra Carpenter Gopal Mehto Kanwar Singh
Audio Rajendar Pal Video Recording Jai Prakash
Vision Mixer Neena Jain Makeup Sunita Chhabra
Camera Deepak Sharma Assistance in Production Sanjeev Katoch
Producer Yogesh Kumar
An EMPC Indira Gandhi National Open University presentation -1999
ASKING QUESTIONS... b When to ask ? b Where to ask ?
GROUND RULES b make an appointment else you will look unprofessional & rude b unplanned meeting implies unprepared user b ensure that the user has enough time for you
GROUND RULES b user’s work place access to documents access to documents home ground home ground b neutral meeting ground
MISSING QUESTION... b HOW is the work done ?
WHY MISSING ? b concerned with reasons and not methods b vital to distinguish between data and methods
USERS ARE MOST IMPORTANT b State-of-the-art systems but useless b Identify all end users b Accurate & complete organizational chart b classify end users