加拿大代写essay：对象关系数据库
加拿大代写essay：对象关系数据库
对象关系数据库的优点：
可重用性和共享是对象关系数据库的主要优势。为了扩展DBMS服务器的功能和集中管理标准，可重用性是非常有用的，而不是为每个功能提供应用程序代码。数据库设计阶段的时间和成本在可重用性的帮助下减少。其次，灵活性和功能性得到提高。与长期表现相比，灵活性具有更高的价值。关系数据库维护成本高，这是对象的优点。与传统的关系数据库模型相比，面向对象的结构可以很容易地维护数据库设计。另一方面，它比传统的系统更具可扩展性和可靠性。也可以使用基于现实世界的复杂数据类型建模。它可以用于处理高度复杂数据的数据库应用程序。最后，系统的整体性能将得到改善。
加拿大代写essay：对象关系数据库
对象关系数据库的缺点：
对象关系数据库有很多缺点，ORDBMS具有明显的复杂性缺陷，甚至会增加系统的成本。 ORDBMS的供应商正试图将对象模型扩展到关系模型中，但又增加了一些复杂性。面向对象的数据库系统忽略了这一点，突出了这两种技术之间的语义鸿沟。自从数年以来，关系数据库的对象已经在市场上占主导地位，但面向对象的语言系统在当前情况下并没有多大关联。因此，找到合格的数据库专业人员仍然不容易。
加拿大代写essay：对象关系数据库
Advantages of object-relation database:
The reusability and sharing are the major advantages of the object-relation database. For extending the function of the DBMS server and centralized management standard reusability is quite useful instead of providing application code to each function. The time and cost in database design phase are reduced with the help of reusability. Secondly the flexibility and functionality are increased. Flexibility is of higher value in comparison to the performance in the long run. The relational database is of high maintenance costs which are the advantages of the objects. The database designs can be easily maintained by the object-oriented structures in comparison to the traditional relational database model. On the other hand it is extensible and more reliable in comparison to the traditional system. The modeling of complex data types can also be used which is based on the real world. It can be used for database applications dealing with highly complex data. Lastly the overall performance of the system will be improved.
加拿大代写essay：对象关系数据库
Disadvantages of object-relation database:
The object relational database has many disadvantages and the ORDBMS has obvious flaws of complexity that even increases the cost of the system. The vendors of ORDBMS are trying to extended object model into relational model with some additional complexity. Object-oriented database system misses the point and highlights the semantic gap between the two technologies. Since several years the objects to relational databases are already prevailing in the market but the object-oriented language system is not of much relevance in present scenario. Therefore it is still not easy to find qualified database professionals.
