SDLC Models - testing

SDLC Models
gksha.ittraining@gmail.com

Introduction to the SDLC
Planning
Analysis
Design
Development
Maintenance
Testing

Different SDLC Models
Waterfall Model
V-Model
Spiral Model
Prototype Model

SDLC Phases
Planning
 Business value
 Project Cost
 Return on Investment
 Project Plan
 Project Kick Off

SDLC Phases
Analysis
 Requirement Gathering and Analysis
 Requirement Documentation
 System inputs
 System Functions
 Output of Analysis Phase

SDLC Phases
Design
 Design Specification
 Technology to be used
 Requirements are broken down to modules
 Functional Planning

SDLC Phases
Development
 Design specification to Working Model
 Develop Components
 Components are integrated to Complete System
 Unit Testing

SDLC Phases
Testing
 Testing Activities based on Test Plan
 Bug Tracking and Fixes
 Testing Sign off

SDLC Phases
Maintenance
 Troubleshooting
 Help Desk and Training
 Latest updates of the Software

The Waterfall Model
Requirement Analysis Phase
System Design Phase
Testing Phase
Maintenance Phase
Implementation Phase

The Waterfall Model
Requirement Analysis Phase
 Requirement Gathering and Consolidation
 Requirement Analysis
 Requirement specification document
Entry Criteria: Requirements from End User
Exit Criteria: Requirement specification document

The Waterfall Model
System Design Phase
 System Design is created
 Hardware and software requirements
 Requirement specification document
 System Architecture
 System Design specification document
Entry Criteria: Requirement specification document
Exit Criteria: System Design specification document

The Waterfall Model
Implementation Phase
 Modules are identified
 Modules are developed
 Unit Testing
Entry Criteria: System Design specification document
Exit Criteria: Unit Test Sign-off

The Waterfall Model
Testing Phase
 Integration Testing
 System Integration Testing
 Defect tracking and fixes
 Bug Re-Testing
 Regression Testing
Entry Criteria: Unit Test Sign-off
Exit Criteria: System Test Sign-off

The Waterfall Model
Maintenance Phase
 Production defects are resolved
 Customer Support
Entry Criteria: System Test Sign-off
Exit Criteria: Application shutdown or no updates

The V-Model
Prepare for
Acceptance Test
Prepare for System
Test
Prepare for
Integration Test
Preparation for
Unit Test
Requirement
Analysis
Acceptance Testing
High-level Design System Testing
Detailed Design Integration Testing
Coding Unit Testing

The V-Model – Verification and Validation
Verification Phase Validation Phase
Prepare for
Acceptance Test
Prepare for System
Test
Prepare for
Integration Test
Preparation for
Unit Test
Requirement
Analysis
Acceptance Testing
High-level Design System Testing
Detailed Design Integration Testing
Coding Unit Testing

The V-Model – Verification Phases
Requirement
Analysis
• User Requirements are documented
• Document will contain functional and non functional requirements of the system - SRS
High Level
Design
• Requirements are analyzed to implement
• Software Specification Document is created which serves as the basis for software development.
Low Level
Design
• Modules are listed and functionality of each module is described.
• Dependency of each module is defined
• Database design and Integration testing design etc… are carried out
Coding
• Coding of the system is performed

The V-Model – Validation Phases
Unit Testing
• Modules or Components are tested separately
• Testing done by developers
Integration
Testing
• Testing performed after integrating the Components or Modules to find defects due to integration between the
modules.
• Testing performed by developers.
System
Testing
• Testing to check if it meets the functional and non functional requirements
• Dependency of each module is Performed by Test Team in an environment similar to production environment.
• Database design and Integration testing design etc… are carried out
UAT
• To test the system according to user and business requirements. To check if system is ready for public use.
• Performed just before implementing the system in the production environment.
• Performed by Business.

Agile Model
Agile Model
Iteration
Phase 1 Phase 2 Phase 3
Project
Iteration 1 Iteration 2 Iteration 3
Software Software Software

Agile Principles
 Short Term planning
 Team should be given more importance than process and Tools
 Creation of software should be given importance than documentation
 Effort should be focused on effective collaboration with customers than
bargaining maximum pricing
 Ability to change during course of a project should be given priority than
strict adherence to the plan

Incremental Model
Incremental Model
Module 1
Module 2
Module 3
Module 4
Stage 1
Stage 2
Stage 3
Stage 4
Module
Feedback

Iterative Model
Iterative Model
New
Requirements
Enhancement 1 Module Enhancement 2
Quality
Standards

Iterative Model
Requirements
Phase
Design
Phase
Implementation
and Test Phases
Review Phase

For any QA training and support related discussion, mail me at

SDLC Models - testing

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