What are SDLC and STLC ? Explain its different phases.

• SDLC
  Requirement phase
  Designing phase (HLD, DLD (Program spec))
  Coding
  Testing
  Release
  Maintenance
• STLC
  System Study
  Test planning
  Writing Test case or scripts
  Review the test case
  Executing test case
  Bug tracking
  Report the defect