软件体系结构与设计模式笔记专门摘录重点

企业信息系统架构 图1清晰的展现了我们企业在信息化建设的成果。并且,这些应用系统在各自服务的生产领域内提高了生产效率,提升了服务质量,同时也为决策层提供了可靠、准确的决策数据。 　　1 问题描述 　　以上各应用系统系我企业最初始的应用系统架构。由于各个应用系统是根据生产和管理需要逐步建立起来的,在投用初期并未体会到各个应用系统合理架构的重要性和必要性。在众多系统正式上线投用的时候,问题逐一暴露出来,下面列举最关键性问题: 　　1.1 不能完成"一站式"系统登录 　　通常一个用户需要使用多个应用系统,从图1的设计架构来看,需要对同一用户进行多个系统单独授权。这不仅可能需要用户记住很多的登陆账号,而且必然造成用户多次登陆才能进行相关业务操作的麻烦。 　　1.2 数据不唯一、未共享 　　对同一个企业,某些基础数据往往需要唯一、统一。如本系统的"物资管理系统"、"劳保工具系统"等中需要关联"员工管理系统"中的员工信息,进而了解该员工拥有的物资设备以及劳保发放情况等;而某些业务数据通常需要作为绩效考核等决策支持系统的原始数据。而原各独立设计的系统很难做到。 　　1.3 业务流程不统一、不规范 　

美国艾朱斯特、艾朱斯特编著的《C++Qt设计模式》本书是美国萨福克大学已使用十余年的经典教程，利用跨平台开源软件开发框架Qt阐释了C++和设计模式中的主要思想。全书共分四个部分：第一部分介绍C++、UML、Qt、模型-视图、SQL、XML、设计模式等基础知识，目的是为零基础的C++初学者铺垫一条学习面向对象编程的快捷之路；第二部分讲解内存访问、继承等重要的C++特性，是前一部分的延伸和拓展；第三部分使用Phonon编写了一个多媒体播放器，展示了主要技术理念的应用方法；附录部分给出了C++保留关键字、Debian和Qt程序开发环境的配置等内容。每节的练习题和各章后面的复习题，既可作为课堂上的讨论题，也可进一步启发读者对于关键知识点的思考。《C++Qt设计模式》可作为软件开发人员学习Qt开发技术的参考书，也可作为从事Qt软件开发的研究人员和科技工作者的工具书。

java 设计模式 源码 欢迎访问DesignPattern项目 DesignPattern项目是设计模式（Design pattern）代表了最佳的实践，通常被有经验的面向对象的软件开发人员所采用。 设计模式是软件开发人员在软件开发过程中面临的一般问题的解决方案。这些解决方案是众多软件开发人员经过相当长的一段时间的试验和错误总结出来的。 工厂模式(factoryPattern) 抽象工厂模式(abstractFactoryPattern 单例模式(singletonPattern) 建造者模式(builderPattern) 原型模式(prototypePattern) 适配器模式(adapterPattern) 桥接模式(bridgePattern) 过滤器模式(filterPattern) 组合模式(compositePattern) 装饰器模式(decoratorPattern) 外观模式(facadePattern) 享元模式(flyweightPattern) 代理模式(proxyPattern) 责任链模式(chainPattern) 命令模式(commandPatter

LabVIEW状态图模块 状态图—— 用直观的方法来表达基于事件的系统 * Statecharts are an extension of the finite state machine. They were created by David Harel in the 1987 and are part of the UML standard commonly used in embedded system development. ----------------- UML stands for Unified Modeling Language (some say Universal Modeling Language). It is a modeling language consisting of several sublanguages to model structural and behavorial aspects of a software system. UML consists of multiple types of diagrams. The underlying premise of UML is that no one diagram can capture the different elements of a system in its entirety. The nine UML diagrams are: Use case diagram: Identifies the primary elements and processes that form the system. The primary elements are termed as "actors" and the processes are called "use cases“. Class diagram: Defines a detailed design of the system and classifies the actors into interrelated classes. The relationship between the classes can be either an "is-a" or "has-a" relationship. Each class may provide functionality through "methods“. Each class may have certain "attributes" that uniquely identify the class. (3) Object diagram: A special kind of class diagram. An object is an instance of a class. This essentially means that an object represents the state of a class at a given point of time while the system is running. (4) State diagram: Represents the different states that objects in the system undergo during their life cycle. Objects in the system change states in response to events. (5) Activity diagram: Captures the process flows in the system. Similar to a state diagram, an activity diagram also consists of activities, actions, transitions, initial and final states, and guard conditions. (6) Sequence diagram: Represents the interaction between different objects in the system. It is time-ordered. This means that the exact sequence of the interactions between the objects is represented step by step. Different objects in the sequence diagram interact with each other by passing "messages". (7) Collaboration diagram: Groups together the interactions between different objects. The interactions are listed as numbered interactions that help to trace the sequence of the interactions. The collaboration diagram helps to identify all the possible interactions that each object has with other objects. (8) Component diagram: Represents the high-level parts that make up the system. This diagram depicts, at a high level, what components form part of the system and how they are interrelated. A component diagram depicts the components culled after the system has undergone the development or construction phase. (9) Deployment diagram: Captures the configuration of the runtime elements of the application. This diagram is by far most useful when a system is built and ready to be deployed

详细讲解热修复设计、插件化设计、组件化设计、Rx响应式编程、图片加载框架、网络访问设计框架、ICO架构设计、jetpack等等

程序设计模式观察者模式

这是4G LTE EPC的系统架构和系统通信流程3gpp标准协议文档23401-g20 方便大家学习和查阅。

酒店客房管理系统的系统架构图如图2-4所示。 图2-4 系统架构图

期末考试总结内容，没听过课的学生可以根据这个复习，保证能过，