SDLC and STLC

SDLC is software development life cycle which has the following stages.

1. Requirement or Information gathering
2. Analysis
3. Design
4. Coding/implementation
5. Testing
6. Installation
7. Release and maintenance

Whereas STLC is software testing life cycle which is a part of SDLC and has the following stages:

1. Requirement
2. Prepare test plan
3. Review
4. Prepare test cases
5. Execute the test
6. report analysis
7. Bug analysis(log the bugs)
8. Bug report
9. Close testing