SDLC

SDLC

• SDLC stands for Software development Life Cycle

• It ensure a Systematic workflow and helps align software development with business goals and users requirements.

• Provides a clear and organized framework for managing development phases

• helps in early detection of defect , reducing overall cost and time.

Planning ----> Analysis ------> Design -------> Development ------> Testing ------> Deployment----->Maintenance.

1. Planning

• The project planning phase establish the goals and scope of a softeware development project

• Discussed about the project technically,financillay,and operationally feasible.

• Activities - Feasibility analysis,coctestimation,scheduling ,resource planning

• And overall user interface design of the software

• AN inital software requirement specification (SRS) document.

• SRS contain software functions,required resouce,possible risks and project timeline.

2.Analysis

• During the analysis phase ,the development team collects and analyzes information on the project's requirements .

• this will process advance the work they started in the planning phase ,moving from a high - level to pratical implementation plan.

• often involves gathering user requirement, conducting market research and feasibility testing and resouses.

Design

• In these stage the approved rrequirements are transformed into a technical buleprint foe implementation.

• HLD (High - Level Design) : Define System architecture , technology stack ,database design and major mosules.

-LLD(LOW - Level Design): spesifices components logic,APIs,data structures,And workflows.

• Finally released the Design Document Specification(DDS)

4.DEvelopment

• Developers build the software based on the approved design

• to write the code,code reviews,unit testing,version control management.

5.Testing

• Testing ensures the software meets requirements and is free from defects before release

*Types of testing inculde: *

• Unit Testing - verifies individual components.
• Integration testing :Ensures modules work together
• System Testing : validates the complete System
• User Acceptance Testing (UAT):Confirms Bussiness Requiremnts Are met

7.Deloyment

• The tested software is released to users.

• Production setup ,development ,somke testing

• Modern Approach: Continuous Integration and Continuous Deployment (CI/CD) pipelines for faster and reliable releases

• live application

7.Manitenance

• Post- deployment support ensure long -term usuability

• Activities: Bug fixes,profromance tuning,upadtes,feature enhancements.

• Patches,updates,new versions

Common Models

• Waterfall Model
• Agile Model
• V-Model
• Spiral Model
• Incremental Model
• RAD Model