TN TRB Computer Science Syllabus - Business Computing #2 System Development Life Cycle SDLC

Tamil Nadu TRB Computer Instructors GRADE1 Exam Syllabus
Tamil Nadu TRB Computer Science Syllabus - Business Computing - SDLC
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TRB COMPUTER SCIENCE - BUSINESS COMPUTING

System Development Life Cycle
Application Development Life Cycle
Software Development Life Cycle (SDLC)
* Framework to define tasks performed at each step / phase
* Structure followed by development team
* Defines a methodology for improving the quality of s/w and process.
* Also called Software Development Process.

Phases of SDLC
1. Planning
2. Requirement Analysis
3. Design
4. Implementation / Coding
5. Testing
6. Deployment
7. Maintenance

Customer / Client has business idea and money to get start it.

1. Planning
planning the requirements
what / when / where / how
Eg:
registration
login
dashboard
products list
logout
...
2. Requirement Analysis
The team gather collect detail requiremnt and document everyting
Product owner
Operations
Developers
Testers
Registration
username input field
password field
checkbox to accept tnc
submit button
Save data to DB
Login
Username field
Password field
Submit button
Read user information from DB
Log user into the system session
Dashboard
After login redirect to here
after logout redirect from here
other data to display
Logout
Logout button
Clear the user session
Prevernt other hack
- Software specification document

3. Design
Business rules
Layout
Color scheme for the application
Supporting device
Supporting browsers for online applications
Programing languages / DB tool / Frameworks
Server design
DB design
Applicaiton architecture
- Design specification document

4. Implementation
Operations team setup the development servers
Developers wirtting code for the application
Design team planing the UI
Testers analyze requirement and write test cases with testing plans
sometimes find some usablity issue while wirting test cases,
that leads to redesign the UI

5. Testing
Execute all test cases
validate all the requirements
all functionalities are working as expected

6. Deployment
Operations team moves the application to production
can have staging
real users will use the application

7. Maintenance
Enhancement in application / servers / DB
Add new feature
Production bug fix

SDLC Models:
1. Waterfall Model
2. Iterative Model
3. Sprial Model
4. V-Model
5. Big Bang Model
* Agile

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