1. Writing by Nakajima PS-Team SQiP 2011.9.9 http://www.flickr.com/photos/cmlburnett/4994716354/Copyright (C) Nakajima NTT DATA MSE Corporation

2. 10 NTTMSE NTT DATA MSE CORPORATION NTT60 40 1 2 3 42 3. 1 2 3 4. $1000+ $100 Cost to Fix A Bug $10$1Specification DesignCodeTestReleaseTime When Bug is FoundLessons Learned in Software Testing (by Cem Kaner, James Bach and Bret Pettichord, Dec 15, 2001) 4 5. PL QASL SL SL SL SL SL 5 6. SL 6 7. QA 7 8. 8 9. QA X X PL SL 9 10. QA SL 10 11. FD: DD: M: UT: IT: time11 12. FD: DD: M:UT: IT:time 12 13. time13 14. 14 15. 15 16. 16 17. 17 18. 18 19. 19http://www.flickr.com/photos/aldoaldoz/1438838260/ 20. 20 21. 3 21 22. 22 23. 23 24. 24 25. 25 26. 26 27. 27 28. 28 29. 29 30. 30 31. 31 32. 32 33. 33 34. 34 35. 35 36. SL 36 37. 201 147 37 38. 38 39. or 39 40. etcetc etcetc Quality AnalysisPage Page Step Step 40 41. Page Page StepStep 41 42. 42 43. 43 44. 44 45. 45 46. 46 47. 47 48. 48 49. 49 50. 50 51. 51 52. E E 52 53. 53 54. 54 55. 55 56. 56 57. 57 58. 58 59. 59 60. 60 61. SL QAPL61 62. 3 2R RR1 62 63. FDDD 63 64. 64 65. 65 66. 99% 95% 85% 65% 66 67. /KLOC 1 1367 68. 6(2011/8/31) 68 69. KPT 69 70. 70 71. 71 72. 72 73. 73 74. 74 75. 75 76. nakajima.kenichiro@nttd-mse.com@imaichiro76