DB Projects Help>> Concepts of object oriented database management systems
当数据库的功能与面向对象的编程功能结合使用时，结果是一个面向系统的数据库管理（OODBMS）。OODBMS允许程序员开发面向对象的产品，将其存储为对象，然后复制或修改现有对象以在OODBMS中创建新对象。因为数据库与编程语言程序员集成在一起，可以在OODBMS和编程语言将使用相同的表示模型的环境中保持一致性。但是，关系DBMS项目在数据模型和应用程序之间保持了明显的分离。
随着Web技术的使用随着Intranet和Extranet的实施而增加，公司对OODBMS具有既得利益，以显示复杂的数据。使用专门设计用于存储数据的DBM的使用为对象提供了针对多媒体演示的公司或使用计算机辅助设计（CAD）的组织的优势。
Some databases are object-oriented language designed to work with object-oriented programming such as Delphi, Ruby, Python, Perl, Java, C #, Visual Basic NET, C + +, Objective-C and Smalltalk. Others have their own programming languages. OODBMSs use exactly the same pattern as the language of object-oriented programming.
ODBMS特征
Housing: two points of view, a programming language and database to examine the regulation of view. Encapsulation is the representation of the data object, its properties and methods defined in processing information objects. In this, the activities are data objects are visible, but the data and the implementation of these objects are hidden.
类型和类：类型尤其是指对象选择系统，该系统由用户界面和实现组成的两个部分组成。通常，用户界面可见，实现是隐藏的类是一个模板，可以为其实现创建某种类型的对象。可以通过制作新的使用类别来创建新对象。
继承：数据库对象的非常重要的功能；它给出了不同级别的不同对象之间的层次关系，并提供代码可重复性。它有助于考虑系统中共享的实现和规格。它们是不同类型的遗产，作为强迫替代的遗产，遗产整合和专业遗产的遗产。
复杂的对象：复杂的对象是使用基本对象（例如整数，字符串，real，booleansssssss构建的）。等等，我们可以定义解决这些新复杂类型的方法。
Object Identity: This is a very important issue in the database; each object is uniquely identified from the entire database or similar forms objects. Each object has a unique identity, and we can access and modify an object using same. It is a variable name or physical address space in memory.
Scalability: A database system has its own set of predefined data types that we can use to write new types, and there is no difference in usage between what the system, and we have written, but there may be significant differences in the way both are supported.
从灾难性失败中恢复
The term is most commonly used for design breakdowns, but has often been prolonged to many other exercises where complete and irrecoverable reduction takes place. Such breakdowns are researched using the methods of forensic technological innovation, which aspires to identify the cause or causes of problems.
A huge problem is a quick and complete problem of some system from which restoration is extremely hard. Catastrophic breakdowns often lead to flowing systems problems.
Examples of huge problems of manufactured components include:
The Tay Track Fill problems of 1879, where the middle half distance of the bridge was absolutely damaged while a train was spanning in weather. The bridge was horribly designed and its replacing was built as an individual construction upstream of the old.
The problems of the Southern Pay Dam in 1889 introduced 4.8 million US gallons of water and wiped out over 2,200 persons (popularly known as the Johnstown Flood).
1928年，圣弗朗西斯大坝的问题引入了1200万加仑的水，造成了公认的传给385人。
The fall of the first Tacoma Becomes smaller fill of 1940, where the main outdoor patio of the road bridge was totally damaged by energetic moaning in a 40 mph wind.
The De Havilland Comet problems of 1954 later motivated to be design breakdowns due to unexpected steel tiredness at the crevices of block windows used by the Comet 1.
由于风暴尼娜（Storm Nina），1975年在远东地区举行的62个Banqiao公共工程问题活动。大约86,000人因飙升而去世，另有145,000人在以下疾病期间去世，总数为231,000。
The Hyatt Regency path fall of 1981, where a stopped path in a resort reception zeros absolutely, eliminating many persons on the construction and those below.
The Room Taxi Enemy of 1986, in which an O-ring of the bomb enhancer unsuccessful, and the entire vehicle was lost.
切尔诺贝利菲舍尔（Chernobyl Fischer）问题的壁炉，该壁炉在1986年增加，并引起了可观的放射性材料污染物。
The fall of the Warsaw stereo mast of 1991, which had up to that position used the subject of global highest construction.
The attack and following fireplace at the World Trade Heart on October Eleventh, 2001 is thought to have damaged the floor joist to the position of huge problems.
房间出租车在2003年的菲律宾，在起飞时造成的一侧损坏导致重新进入。
The complete fall of the multi-span I-35W Ms Stream Fill on May 1, 2007
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