Defect Management

Defect: It is any flow in the software system. It can be classified into

• Wrong
• Missing
• Extra

Examples of defects:

• Wrong or incomplete requirements
• Incorrect design specification
• Incorrect program specification
• Errors in coding
• Data entry errors
• Errors in testing
• Mistakes in error correction

Error: A human action that produces an incorrect result

Fault: (Defect) may lead to failure

Failure: malfunction of software

Severity: It indicates how bad the bug is and reflects its impact to the product and to the user. It should be predefined for consistency

Ex.  Misspelling on a screen,  Broken link in help,  Misspelling on an error message

Priority: It determines the order they can be fixed. It can be decided in 4 levels as follows:

• Very High
• High
• Medium
• Low

Defect report attributes:

• Defect Id
• Project Name
• Module Name
• Sub-module Name
• Phase
• Type
• Severity
• Priority
• Summary
• Description
• Status
• Reported by
• Assigned to
• CC to

Defect Tracking Tools

• Test Director (or QC)
• Rational clear quest
• Bugzilla
• Excel sheet

Defect Management Process

• Defect Prevention
• Deliverable base-ling (sticking to requirements)
• Defect Naming
• Defect Resolution
• Process Improvement (root cause analysis
• Management Reporting