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A component is an interchangeable, physical part of a software system that encapsulates an implementation body (which fulfils a function) and provides a set of methods for

of a system consists of four processes: development, management, support and reuse of reusable assets (building blocks).

Software Reuse A component (component) is a relatively functionally independent unit of software with reusable value. In the object-oriented approach, a component consists of a set of objects containing a collection of collaborative classes that work together to provide a system functionality.1) Software reuseReusability is the extent to which a system and/or its components can be reused in other systems.

logical view, process view, implementation view, deployment view and use case view.

the semantic rules that UML uses to describe things are named things, relations and diagrams respectively.

These are things, relationships and diagrams. Public mechanisms are public UML methods for achieving specific goals and include four main types of specification (detailing), modification, public classification (generic division) and extension

analysis.The structure of UML: The structure of UML consists of the basic building blocks, the rules that govern how these building blocks are put together (the architecture) and a number of mechanisms that apply to the whole of UML.

Language Unified Modelling Language (UML) is a well-defined, easy to express, powerful and universally applicable modelling language. Its scope is not limited to supporting object-oriented analysis and design, but also supports the whole process of software development, starti

between objects, where one object requests a service by sending a message to another object. Polymorphism: Polymorphism means that the same operation can be interpreted differently when applied to different objects, and produce different execution results

The unit of encapsulation in an object-oriented system is the object, and information can only be exchanged between objects through interfaces. Messages: Messages are the means of

central idea that distinguishes object-oriented methods from other methods.

Inheritance is a mechanism by which different classes in a hierarchical association of a class share properties and operations. For two classes A and B, if class A is a subclass of class B, then class B is a generalisation of class A.

an object name, an attribute and an operation (method). Classes: A class is a collection of objects with the same properties and the same operations. Each class generally has instances; a class without instances is an abstract class.

n object is a set of attributes and a wrapper for dedicated operations on this set of attributes. An object can typically consist of three parts

Object-Oriented Approach mainly examines the basic concepts of object-oriented, data hiding, UML and building blocks. 1) Basic concepts Object-oriented approach includes object-oriented analysis, object-oriented design, and object-oriented

CMMI is not limited to software, but covers software engineering, systems engineering, integrated product development and systems procurement.

CMM is divided into: initial level, repeatable level, defined level, managed level and optimised level.

Characteristics and Guidelines for Their Use. 2.8 Software Process Improvement Software Process Capability Maturity Model (CapabilityMaturityModel, CMM) and Capability

to the planned and organised activities The ISO/IEC9126 software quality model has been adopted by China's national standards

carried out to ensure that a software system or software products fully meet the required quality, these activities are planned and organised throughout all phases of software production, i.e. the entire life cycle. There are two types of software quality characteristics metrics: predictive and acceptance. Commonly used international software quality models are ISO/IEC9126 and the McCall model.