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D7S%M @MYb~9X,n0The Process Management Principle: The quality of a product is largely governed by the quality of the process used to build it. The quality of a software product is largely governed by the quality of the software process used to develop and maintain it.51TestingÈí¼þ²âÊÔÍø X'G*M2Y(gB
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The Crisis Principle: A mature organization does not abandon its process in a crisis.51TestingÈí¼þ²âÊÔÍøk^Lg T%Ae#@
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wu g1A9fyZ JQp0The Process Improvement Principle: Any process can be improved; continuous improvement is necessary to remain competitive.51TestingÈí¼þ²âÊÔÍøL-o5cmK
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The Software Process Improvement Principle: The process to develop and maintain software can be defined, managed, measured, and continuously improved.51TestingÈí¼þ²âÊÔÍøEd R5s3K _Y {^RX N
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Competence: The competence of the people who do the work is crucial to project performance and organizational success.
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Empowerment: A mature process empowers people to work effectively and efficiently.51TestingÈí¼þ²âÊÔÍøtuc.? T-p _
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Technology: The power of the tools used to do the work has a critical impact on the efficiency of the process, with a corresponding impact on competitive advantage.51TestingÈí¼þ²âÊÔÍø{ M}MUNnAE
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6Q#Qj l@0The Process Un-Supremacy Corollary: A mature process cannot overcome incompetent people or inadequate tools.
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%gI9``(w-GA wU0The Good Management Corollary: A mature process cannot overcome unsound management.51TestingÈí¼þ²âÊÔÍø;\'@#o U6B
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7\BZf-u-n0The Scar-Tissue Proverb: Maturity is a function of scar tissue. - Mark Paulk
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jVLR,z^O kA R,]t0Predictability: In custom software development, predictability of cost and schedule is important to the customer.51TestingÈí¼þ²âÊÔÍøw hp0}!bPPF
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Time to Market: In commercial software development, time to market is the major factor in market share.
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Trade-offs: Pick any two goals from better, faster, cheaper.51TestingÈí¼þ²âÊÔÍøDyDU/ct/k
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The Zero-th Law of Software: If the software does not have to work, you can always meet any other requirement. - Gerald Weinberg
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The Quality Decision: Whose opinion of quality is to count when making decisions? - Gerald Weinberg51TestingÈí¼þ²âÊÔÍø(d oucK5i Y$N%}
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Investment: Process improvement requires investment.
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Market Realities: A mature process will not generate a market; a bad process will not destroy a lucrative market.
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Customer Satisfaction: The reason for doing process improvement is to satisfy (delight) customers so they will continue to buy your products and services and urge others to do so.
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}#yjfb$|E(A"x0Competitive Advantage: A mature process contributes to efficiency. In a competitive market, the organization that can produce its products and services most efficiently (and delight its customers) will thrive.51TestingÈí¼þ²âÊÔÍøg-?&yC:f/~
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!Q:qy7H,W9J6p3u0Software Focus: The CMM focuses on the practices that are under the control of the software function.51TestingÈí¼þ²âÊÔÍø Ff.B g*[_A~f
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A Road Map: The maturity levels and key process areas provide a road map to prioritize process improvement.51TestingÈí¼þ²âÊÔÍø }pj5?#qr`I
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The "What-Not-How" Principle: The CMM does not mandate how the software process should be implemented; it describes what characteristics the software process should have.51TestingÈí¼þ²âÊÔÍø tz|s0hj+}e] hk
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4w5h,KDm.w%\0Capability vs. Performance: The CMM focuses on building the process capability of an organization; the process performance of individual projects is correlated but not identical.
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Organizational Improvement: The CMM is a model for organizational improvement. It is not tuned to improving individual projects or helping a project that is in trouble.
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Infrastructure: Without organizational (senior management) support, long-term process improvement is unlikely.
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The "Key" Principle: The CMM describes key process areas and key practices. The CMM is not exhaustive.51TestingÈí¼þ²âÊÔÍø-yd4WM6aB2f V
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"P~[.\c-K%h)\c0Comprehensiveness: The CMM does not address all the important factors that impact success. Excluded topics include capable people, systems engineering, and powerful tools.51TestingÈí¼þ²âÊÔÍøk @0J B:J6UAq+h
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A Public Model: The CMM is based on the contributions of the software engineering community; the SEI is a steward who coordinates and leads its development and maintenance.51TestingÈí¼þ²âÊÔÍøP5_LUa PZm
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Technology: No specific tools, methods, or technologies are mandated by the CMM.51TestingÈí¼þ²âÊÔÍø@V%H)g0j#J|$}V/~&m
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"b KRbf@u0Process Evolution: Key process areas are not processes. Processes evolve, even when that evolution is not explicitly described in the CMM. A key process area describes a process at a particular maturity level.51TestingÈí¼þ²âÊÔÍø_#mq#P~ WWZ&wG+O
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Orthogonality: The key process areas in the CMM are interrelated. Processes (and key process areas) depend on one another.51TestingÈí¼þ²âÊÔÍøPW$Z(}7?o-u
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Level 1 Quality: High-quality products can be, and have been, developed by Level 1 organizations.
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,K?S/a@uuaC9xi0The Repeatable Level Principle: For an organization to mature beyond chaos, it must install basic management controls that instill self-discipline.
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9TqF:hHQy4G0The Defined Level Principle: For an organization to mature beyond the level of self-discipline, it must use well-defined processes as a foundation for improvement.
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[2|| A Ttj0The Managed Level Principle: For an organization to mature beyond the level of defined processes, it must base decisions on quantitative measures of its processes and products so that objectivity can be attained.51TestingÈí¼þ²âÊÔÍø)u.zNO,zWK8h0fSd
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The Optimizing Level Principle: Ultimately, an organization must recognize that continual improvement (and continual change) are necessary to survive.
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The Documented Process: Documented processes are the basis for consistent performance and improvement. (Say what you do; do what you say.)51TestingÈí¼þ²âÊÔÍø7k7~)qCac*D$x x
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^1va8h| bU,f@!t N0Usefulness: A process description should be detailed enough to be useful, not so detailed that it is unusable.
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A Satisfactory Process: A process can be considered satisfactory when it is practiced, verified and validated, trained, measured, controlled, enforced, and is a basis for improvement.51TestingÈí¼þ²âÊÔÍø'VE0a&{@ g)^7V
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:f-_9xRfXwFZf0A Well-Defined Process: A well-defined process has documentation that details what is done, when it is done, who does it, and the things used and produced.51TestingÈí¼þ²âÊÔÍø!hu&Yb:Q`a o9o;@
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ltJ6P*_0The EITVOX Corollary: A well-defined process has entry criteria, known inputs, a process description of how to perform the task, known outputs, a verification mechanism, and exit criteria.
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Institutionalization: Institutionalized processes are consistently performed across an organization (subject to appropriate tailoring).51TestingÈí¼þ²âÊÔÍø!o R&_Ao#k e
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Measurement Insight: The purpose of measurement is insight.51TestingÈí¼þ²âÊÔÍøb{5[6XA,t
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Basic Statistics: Blue-collar workers on an assembly line successfully use statistical process control techniques; powerful statistical techniques do not have to be cryptic and arcane.
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;r?Aaol7`0Process vs. Competence: Mature processes enable people to work more effectively.51TestingÈí¼þ²âÊÔÍø?FOA v1Nc-|
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Formality vs. Goodness: A poor process formally described is still a poor process. - Dewayne Perry
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A x![2C M@t4EW8WEW0Box's Rule: All models are wrong; some models are useful. - George Box
;z(hULyf2Oj;a h0Box's¹æÔò£ºÄ£ÐͶ¼ÊÇ´íÎóµÄ£¬µ«ÓÐЩģÐÍÈ´ÊÇÓÐÓõġ£51TestingÈí¼þ²âÊÔÍø.Bm ]+^2^&`
The Rocket Scientist Principle: You do not have to be a rocket scientist to understand the CMM. If something in the CMM is confusing, it is more likely because we explained the concept poorly than that the concept is extremely sophisticated.51TestingÈí¼þ²âÊÔÍø&w-Sj:X pt
»ð¼ý¿Æѧ¼ÒÔ­Ôò£ºÄã²¢²»ÐèÒª³ÉΪһ¸ö»ð¼ý¿Æѧ¼Ò²ÅÄܹ»Àí½âCMM¡£Èç¹ûCMMÖÐÓÐʲô²»ºÃÀí½âµÄ£¬²¢²»ÊÇÒòΪ¸ÅÄî¶àô¸´ÔÓ£¬¶øÍùÍùÊÇÒòΪ¸ÅÄî½âÊͲ»Çå¡£51TestingÈí¼þ²âÊÔÍø4n,?T5uw'O NuS
The One Right Way: There is no "one right way" to implement a software process.51TestingÈí¼þ²âÊÔÍøu[8WtoG
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3P+b;|||y0A Normative Description: The CMM practices describe characteristics of a software process that we would normally expect to see at different levels of process capability.
}"{$f6n sy6S0OE,px0Õý³£»¯ÃèÊö£ºCMMʵ¼ùËùÃèÊöµÄÊÇͨ³£Çé¿öÏÂÔÚ²»Í¬µÈ¼¶µÄ¹ý³Ì³ÉÊì¶È¿ÉÒԹ۲쵽µÄÒ»¸öÈí¼þ¹ý³ÌµÄÆÚÍûÌØÐÔ¡£51TestingÈí¼þ²âÊÔÍø`~SC%n
Stone Tablets: The CMM is not engraved on stone tablets.51TestingÈí¼þ²âÊÔÍøj1m0u?oa:v&~V
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7uesa Q5\n0The "Apply Intelligence" Principle: The CMM should be interpreted in the context of the business needs of the organization. Do not do something foolish just to conform to the CMM.51TestingÈí¼þ²âÊÔÍø4lo&_%lft/A
“Öǻ۵ØÔËÓÔԭÔò£ºÓ¦¸Ã¸ù¾ÝÆóÒµµÄÉÌÒµÐèÒªÔÚÌض¨Óï¾³ÖжÔCMM×÷³ö½âÊÍ¡£²»Òª×öµ¥µ¥ÊÇΪÁË×ñÑ­CMMµÄɵÊ¡£51TestingÈí¼þ²âÊÔÍøHw(qaP/n
Measured Improvement: If you do not measure the effect of process improvement on time to market, productivity, quality, and customer satisfaction, how do you know that it works and that it should continue?51TestingÈí¼þ²âÊÔÍøku~u&F7x,m
ÒѶÈÁ¿µÄ¸Ä½ø£ºÈç¹û²»¶ÈÁ¿¹ý³Ì¸Ä½øÔÚÉÏÊÐʱ¼ä¡¢Éú²úÁ¦¡¢ÖÊÁ¿ºÍ¿Í»§ÂúÒâ³Ì¶È·½ÃæµÄЧ¹û£¬ÔõôÄÜÖªµÀ¹ý³Ì¸Ä½ø²úÉúÁË×÷Ó㬲¢ÇÒÓ¦¸Ã¼ÌÐøÄØ£¿51TestingÈí¼þ²âÊÔÍøE7i AYDAGW
Large, Software-Intensive, Contract Bias: The detailed practices (subpractices) in the CMM are expressed in terms of large-scale organizations that do contract work.
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4q.u'YQ#o%B1y7fJ0Systems Bias: The practices in the CMM are expressed in terms of developing software as part of a system that includes significant nonsoftware components.
Q0q#LY1y5W0ϵͳÇãÏò£ºCMMÖжÔʵ¼ùµÄÃèÊöÓÃÓÒþº¬µÄÓï¾³ÊÇÒ»¸ö°üº¬ÁËÖØÒª·ÇÈí¼þ²¿·ÖµÄϵͳ£¬ÆäÖÐÈí¼þ¿ª·¢Ö»ÊÇϵͳµÄÒ»¸ö²¿·Ö¡£
g7Cs'Sa0k-\g g @A0Tailoring: The CMM should be tailored (or interpreted) to fit the needs of the organization (or sponsor).
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&gP*Xj;q HS;S|0Professional Judgment: Professional judgment must be applied to interpret the CMM practices for a particular organization.51TestingÈí¼þ²âÊÔÍø;Q7fa/q!w)yhE,g
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UY:T;i$T9{+Iq0The SCE Corollary: Judgment is not license. Judgments can be defended to a skeptical (neutral) second party.51TestingÈí¼þ²âÊÔÍø3xf9N:@1kO1x
SCEÍÆÂÛ£ºSCEÖ»ÊÇÅжϣ¬²¢²»ÊÇ“ÈÏÖ¤”¡£µ«ÊÇÈí¼þÆóÒµ¿ÉÒÔÔËÓÃSCEµÄÅжÏÔÚ³Ö»³ÒÉ̬¶ÈµÄ¿Í»§ÃæǰΪ×Ô¼ºÉê±ç¡£51TestingÈí¼þ²âÊÔÍøv D_,u r#r
The Evaluation Principle: The true process is revealed by what the project does, not by what it claims to do.51TestingÈí¼þ²âÊÔÍø p+i+veCYdM^4W
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3C3b.EAUN)O{|0Process Goodness: Effective and efficient software processes are critical to successful process improvement, but goodness can only be determined in the context of the business needs of the particular organization.
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n_SP tw9z'K0Scoring and Goodness: Maturity level and key process area scores are based on whether a documented process is in place and being used. "Goodness" of the process is important, but is not a CMM scoring issue.
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+])Y4LGN*uPX0Process Effectiveness: It is appropriate for assessments to identify findings and make recommendations on ineffective or inefficient processes even when the process is in place and being used.51TestingÈí¼þ²âÊÔÍø)Hp }luc~Nq7z
¹ý³ÌÓÐЧÐÔ£º¼´Ê¹¹ý³ÌÒѾ­´æÔÚ¶øÇÒÕýÔÚʹÓã¬Ò²Ó¦¸Ã¶Ô¹ý³Ì×÷³öÆÀ¹À£¬¼ø±ðÆäÖÐЧÂʲ»¸ß»òЧ¹û²»´óÖ®´¦£¬Ìá³ö¸Ä½ø½¨Òé¡£51TestingÈí¼þ²âÊÔÍø0X`_.@6\9}~8|9gf
Non-CMM Findings: It is appropriate for assessments to identify problems even when they do not map to the CMM, e.g., nonprocess issues.
w}x&I4J["t0·ÇCMM·¢ÏÖ£º¾¡¹ÜÓÐЩÎÊÌâ²»ÊôÓÚCMMµÄ·¶Î§£¬µ«ÆÀ¹À²¢±êʶËüÃÇÒ²ÊÇÓ¦¸ÃµÄ£¬±ÈÈ磺·Ç¹ý³ÌÎÊÌâ¡£51TestingÈí¼þ²âÊÔÍøB%dr]#l r
The Discomfort Factor: An organization will only change if there is a sufficient level of discomfort (pain) with the status quo.
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TnUn8fg!l0Simple, Not Easy: Process improvement may be simple, but it is not easy. - Watts Humphrey51TestingÈí¼þ²âÊÔÍø'nod[}aI&m@
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@"q?C)N0Generic Model: The CMM is a generic model for broad usage. In a specific context, your specific improvement needs may vary.
fA#?P@0})J0ͨÓÃÄ£ÐÍ£ºCMMÊÇÒ»¸öͨÓÃÄ£ÐÍ£¬¿ÉÒÔ±»¹ã·ºÓ¦Óá£ÔÚÒ»¸öÌض¨»·¾³ÖУ¬×éÖ¯¿ÉÄÜ´æÔÚ²»Í¬µÄÌض¨¸Ä½øÐèÇó¡£51TestingÈí¼þ²âÊÔÍø Z s&H6G5i1fI`
CMM as a Tool: When improving the software process, use the CMM as a tool to help achieve business objectives of the organization. When selecting software suppliers, use the CMM as a tool to help understand the risks associated with an offeror.51TestingÈí¼þ²âÊÔÍøcrS Z\&c)@9I R
CMMµÄ¹¤¾ßÐÔ£ºÔÚ¹ý³Ì¸Ä½øʱ£¬¿ÉÒÔÔËÓÃCMM×÷Ϊ°ïÖúÆóÒµ´ïµ½ÒµÎñÄ¿±êµÄÒ»¸ö¹¤¾ß¡£ÔÚÑ¡ÔñÈí¼þ¹©Ó¦ÉÌʱ£¬¿ÉÒÔÔËÓÃCMM×÷Ϊ°ïÖú¼ø±ðÓëij¸ö¹©Ó¦ÉÌÏà¹Ø·çÏÕµÄÒ»¸ö¹¤¾ß¡£51TestingÈí¼þ²âÊÔÍøV|RO^;s3Q
51TestingÈí¼þ²âÊÔÍø5v [$tsM X/c7D?D%t
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Link URL: http://www.cnblogs.com/tester2test/archive/2006/06/20/430339.html

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