basic concepts
CMM: Capability Maturity Model maturity model
SW-cmm: Software CMM
PCB: English forgot, does not refer to Process Control Block. Process control quantization standards, such as defect density.
Pd: Process Database Process Database is like a warehouse in the software process, all products of the recessive software process.
Software maturity model (CMM, Capability Maturity Model) was proposed by Software Engineering Research Institute, USA, Mellon University, and has become a widely affected model after several years of use and modification.
CMM divides the maturity of the software process into 5 grades, the following is the characteristics of 5 levels of software institutions:
(1)
The initial level is unordered, and the project will often give up the original plan during the process. Management has no chapters, lacks a sound management system. The development project is unstable, and the management method of excellent management will be effective, but he leaves, the work order is not unfair, the performance and quality of the product depends on personal abilities and behavior.
There is no plan, relying on personal hero, the development process is a black box (as long as it is a software company, there are initial grades - no certification)
(2)
Repetitive level management institutionalization, establishes basic management systems and procedures, and management work can follow. Preliminary implementation of standardization, development work is better implemented. Change is carried out according to law and do baseline. Stable tracking, new project plans and management based on past practical experience, environmental and conditions for repeating previous successful projects.
Milestone
(3)
Defined development processes, including technical work and management, all have realized standardization, documentation. All technical activities and management activities have been established in the establishment of a comprehensive training system and management activities can control the process, post and responsibilities of the project.
Documentation standardization (organization level)
(4)
The managed product and process have established a quantitative quality goal. The productivity and quality of the activity during the process are measurable. A process database has been established. Project products and process have been implemented. The predictable process and product quality trend, such as predictive deviation, and implement timely correction.
Memory-PCB (project level)
(5)
Optimizing can be concentrated
Improvement process, new technologies, new methods.
It has a means of preventing defects, identifying weak links, and improved methods. The statistical data for process validity can be obtained, and it can be analyzed to give the best method.
The cost of PSP (only CMM5 is likely) is expensive and is only applied to a reliable person. CMM certification has no certificate, only one signature certificate and the company's certified ID number. India 4-5, Hong Kong, US 2-3.
