MIS

1. Assignment of M.I.S.
on
“SYSTEM DEVELOPMENT LIFE CYCLE”
MASTER OF BUSINESS ADMINISTRATION
2015-2017
Submitted to: Submitted by:
Dr. Vageesh Paliwal Sandeep Kumar
(Asst. Professor) RN.22,
Prashant Saini
RN.15
(MBA III semester)
FACULTY OF MANAGEMENT STUDIES
GURUKUL KANGRI VISHWAVIDYALAYA
HARIDWAR-249404

2. System Development Life Cycle (SDLC)
Introduction:
The System Development Lifecycle framework is designed to outline a complete
development and implementation process suitable for developing complex applications.
It is a process of creating or altering information systems, and the models & methodologies
used to develop the systems.
It is mainly used in System Engineering, Information Systems & Software Engineering and
Management.
SDLC Phases:
There are six phases in the system development life cycle, these are
Phase 1 Phase 2 Phase 3 Phase 4 Phase 5 Phase 6
System
Investigation
System
Analysis
System
Design
System
Development
System
Implementation
System
Maintenance

3. Model of SDLC:
1) System Investigation:
 Assesses feasibility and practicality of system.
 Determine if a new system is needed.
 Five primary tasks-
i. List problems, opportunities and directives
ii. Negotiate preliminary scope
iii. Assess project worth
iv. Plan the project
v. Present the project and plan
System
Investigation
System Analysis
System Design
System
Development
System
Implementation
System
Maintenance

4. 2) System Analysis:
 In depth study of old system and identifying new system requirements.
 Define system from user’s view.
 Forms of analysis-
i. Organisational analysis
ii. Analysis of present system
iii. Functional requirements analysis
3) System Design:
 Design new or alternative system.
 Specifies how the system will accomplish the objectives.
 Consist of design activities to be implemented that were done earlier in the system
analysis stage.
 System design consist of 4 major activities-
i. User interface design
ii. Data design
iii. Process design
iv. System specifications
4) System Development:
 Build the system to the design specifications.
 Develop the software-
i. Purchase off-the-shelf software or
ii. Write custom software
 Acquire the hardware
 Test of the new system
i. Module (unit) test – tests each part of the system
ii. Integration testing – tests system as one unit
 Create module for users and operators

5. 5) System Implementation:
 Installing the system.
 Convert from old system to new system.
 Train end users.
 Compile final documentation.
 Testing and evaluating the new system.
 User training-
i. Ease into system, make them comfortable and gain their support.
ii. Most commonly overlooked.
iii. Can be commenced before equipment.
6) System Maintenance (Operations):
Types of changes undertaken in this phase-
 Physical repair of the system.
 Correction of new bugs found (corrective)
 System adjustment to environmental changes (system audit)
 Adjustments for users changing need (adaptive)
 Changes to users better techniques when it become available (perfective)

6. Strengths and weaknesses:
Strength and Weaknesses of SDLC
Strengths Weaknesses
Control. Increased development time.
Monitor large projects. Increased development cost.
Detailed steps. Systems must be defined up front.
Evaluate costs and completion targets. Rigidity.
Documentation. Hard to estimate costs, project overruns.
Well defined user input. User input is sometimes limited.
Ease of maintenance.
Development and design standards.
Tolerates changes in MIS staffing.
 An alternative to the SDLC is RAD (rapid application development), which combines
prototyping, joint application development and implementation of CASE tools.
 Computer-aided software engineering (CASE) is the domain of software tools used
to design and implement applications.