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Verification and Validation in Software Engineering SE19

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The document introduces software verification and validation (V&V) and discusses key techniques used in the V&V process, including inspections, static analysis, and the Cleanroom development process. It defines verification as ensuring a product is built correctly and validation as ensuring the right product is built. V&V aims to find defects and assess usability, applying techniques from requirements through deployment. Inspections and static analysis complement testing by checking static representations, while testing checks dynamic behavior. The Cleanroom process uses formal specification, incremental development, and statistical testing with reliability models.

Technology
1 of 42
Verification and Validation ,[object Object]
Objectives ,[object Object],[object Object],[object Object],[object Object]
Topics covered ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],Verification vs validation
[object Object],[object Object],[object Object],[object Object],The V & V process
[object Object],[object Object],[object Object],[object Object],Static and dynamic verification
Static and dynamic V&V
[object Object],[object Object],[object Object],[object Object],Program testing
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Types of testing
V& V goals ,[object Object],[object Object],[object Object]
V & V confidence ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],Testing and debugging
The debugging process
[object Object],[object Object],[object Object],[object Object],V & V planning
The V-model of development
The structure of a software test plan ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Software inspections ,[object Object],[object Object],[object Object],[object Object]
Inspection success ,[object Object],[object Object]
Inspections and testing ,[object Object],[object Object],[object Object],[object Object]
Program inspections ,[object Object],[object Object],[object Object]
Inspection pre-conditions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The inspection process
Inspection procedure ,[object Object],[object Object],[object Object],[object Object],[object Object]
Inspection teams ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Inspection checklists ,[object Object],[object Object],[object Object],[object Object]
Inspection checks
Inspection rate ,[object Object],[object Object],[object Object],[object Object],[object Object]
Automated static analysis ,[object Object],[object Object],[object Object]
Static analysis checks
Stages of static analysis ,[object Object],[object Object],[object Object]
Stages of static analysis ,[object Object],[object Object],[object Object]
LINT static analysis 138% more lint_ex.c #include <stdio.h> printarray (Anarray) int Anarray; { printf(“%d”,Anarray); } main () { int Anarray[5]; int i; char c; printarray (Anarray, i, c); printarray (Anarray) ; } 139% cc lint_ex.c 140% lint lint_ex.c lint_ex.c(10): warning: c may be used before set lint_ex.c(10): warning: i may be used before set printarray: variable # of args. lint_ex.c(4) :: lint_ex.c(10) printarray, arg. 1 used inconsistently lint_ex.c(4) :: lint_ex.c(10) printarray, arg. 1 used inconsistently lint_ex.c(4) :: lint_ex.c(11) printf returns value which is always ignored
Use of static analysis ,[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Cleanroom software development
The Cleanroom process
Cleanroom process characteristics ,[object Object],[object Object],[object Object],[object Object],[object Object]
Incremental development
Formal specification and inspections ,[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],Cleanroom process teams
[object Object],[object Object],[object Object],[object Object],Cleanroom process evaluation
Key points ,[object Object],[object Object],[object Object]
Key points ,[object Object],[object Object],[object Object],[object Object]

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Verification and Validation in Software Engineering SE19

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  • 15. The V-model of development
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  • 32. LINT static analysis 138% more lint_ex.c #include <stdio.h> printarray (Anarray) int Anarray; { printf(“%d”,Anarray); } main () { int Anarray[5]; int i; char c; printarray (Anarray, i, c); printarray (Anarray) ; } 139% cc lint_ex.c 140% lint lint_ex.c lint_ex.c(10): warning: c may be used before set lint_ex.c(10): warning: i may be used before set printarray: variable # of args. lint_ex.c(4) :: lint_ex.c(10) printarray, arg. 1 used inconsistently lint_ex.c(4) :: lint_ex.c(10) printarray, arg. 1 used inconsistently lint_ex.c(4) :: lint_ex.c(11) printf returns value which is always ignored
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  翻译：