面向对象的数据仓库建模方法的研究

【作者】 庞洁；

【导师】 胡建华；

【作者基本信息】 昆明理工大学 ， 计算机软件与理论， 2007， 硕士

【摘要】 数据仓库能使企业的决策者对企业的前进方向进行预测和分析，越来越得到广泛的应用，在很多的领域也取得了成功。但纵观目前数据仓库的构建状况，其中绝大多数的数据仓库是失败的。究其原因，可能不能将这些失败归咎于数据仓库或决策支持的内在特征，而是由创建的方法所致。本文是对基于面向对象的数据仓库建模技术的研究。首先，在介绍了数据仓库的基本知识后，知道针对数据仓库的应用背景，应该采用开发灵活、反应准确的螺旋模式进行系统的研发。由于数据仓库是面向主题的，因此其开发方法应有利于这一过程。而基于面向对象技术的对象模型能够清晰的反映对象的属性和行为以及对象间的关系，这也正是数据仓库建模所需要的，故在数据仓库的建模过程中，采用的是面向对象的建模方法。面向对象的数据仓库建模方法的具体应用将以电信的欠费主题为例，对该主题进行了比较全面的分析与研究，建立分析模型，分析模型是对当前环境的理解的模型，是进一步设计的基础。在模型设计中，接收分析模型与分析过程中收集的信息，全面地拓展了分析模型，产生对象模型。对象模型中包含了所有的属性以及与系统相关的行为，还有单个对象是如何同其他对象关联的。接着就是持久化的工作，即是将对象映射到数据库表的操作。在讨论完面向对象的数据仓库建模的分析模型和对象模型，产生实现模型，就是数据库的真实结构，这是模型设计的最后部分。更多还原

【Abstract】 The data warehouse can help the policy makers of the enterprise predict and analysis the enterprise forward direction. It has been more widely used and has been successful in many areas. But reviews the current situation in construction state of the data warehouse, among them the most data warehouses is a failure .Trace it to its cause, may not be attributed the failure to the inherent features or decision support of the data warehouse, but caused by method to establish.This article is based on object-oriented modeling data warehouse technology.First of all, after ABC of the data warehouse of the introduction, we direct against the application background of the data warehouse, should adopt the spiral mode that is develop flexibly, reflect accurate and carry on systematic research and development. Because the data warehouse is a subject-oriented, it should be conducive to the process of its development methods, the object model based on object-oriented technology can clearly reflect object attributes, behavior, and the relationship between them, it is also necessary for data warehouse modeling, so in modeling of the data warehouse, it was object-oriented modeling method that was adopted.The concrete application of the Object-Oriented Modeling in the data warehouse will be take owing-fee subject in telecommunications as an example. We have carried on more overall analysis and studied in owing-fee subject, and then set up the model of analyzing that model is the understanding of present environment and is a foundation for further design, In modeling, receive the information collected in models and analytic process, having expanded models of analyzing in an all-round way; develop a comprehensive model produced object model. Object Model contains all the attributes and behaviors related to the system, also have how a single object related with the others. Then lasting is the work that is the object mapped to the database tables operation. Discussion on object-oriented modeling of the data warehouse model and object model, we can achieve the real model that is real structure of the database, which is the last part of the design model.更多还原