Decision Table Testing is a type of software testing commonly created using Excel for clarity and understanding.It helps in confirming code behavior, while structural testing like unit tests is used to validate the implemented code.Understanding why both Decision Table and structural testing are necessary for testing the same logic is crucial.Decision tables have a simple structure with conditions listed vertically and outcomes at the bottom.Different strategies exist for Decision Table Testing, each focusing on specific coverage aspects.Decision Table Testing and structural testing serve different purposes in testing to ensure complete coverage.Decision Table Testing is essential to verify intended decision logic, reveal missing logic, and clarify test coverage.It helps in identifying overlooked requirements, detecting missing logic not captured by structural testing, and improving test coverage.Model-based testing using decision tables is beneficial for detecting specification gaps and non-Boolean logic in software.Decision tables, combined with structural testing, ensure high-quality software by covering both missing logic and implementation mistakes.