| 1. | The scheme deals with class h ierarchy which is an important property in oodbs
类的层次性是面向对象数据库的1个重要属性。 |
| 2. | Abstract : a locking - based concurrency control scheme fo r object - oriented databases ( oodbs ) was presented
文摘:讨论面向对象数据库中的1种基于锁定的并发控制模式。 |
| 3. | Because there are a few oodbs which support the metaclass mechanism , this methodology has limitation to some degree
但只有少数的oodbs支持元类机制，因此该方法存在一定的局限性。 |
| 4. | So . m . halper had presented a methodology based on the metaclass mechanism to incorporate the part - whole semantic relationships into oodbs
为此， m . halper等人提出了一种基于元类机制的，将部分-整体语义联系集成到oodbs中的方法。 |
| 5. | For the purpose of this article , i ll take both relational databases rdbms and object - oriented databases oodbs as one unit , rather than separately
从本文的主旨出发，我把关系数据库（ rdbms ）和面向对象数据库（ oodbs ）放在一起，不单独讨论。 |
| 6. | Or object - oriented data modeling techniques like omt . uml and cord / yourdon . part - whole semantic relationship is the familiar relationship between objects , but the popular commercial oodbs do not provide the built - in support for it
该联系是现实世界中客观实体之间常见的联系，然而流行的商用面向对象数据库系统oodbs并没有为这种联系提供内在( bulit - in )的支持。 |
| 7. | Aiming at this problem , in this dissertation , we present a new methodology to incorporate part - whole semantic relationship into oodbs . our methodology is universal for there is no stringent requirement of oodbs
本文针对这一问题，在halper等人研究的基础上提出了一种新的，将部分-整体语义联系集成到oodbs中的方法，该方法对于oodbs本身没有任何的限制，因此具有较广泛的通用性。 |
| 8. | In order to solve the problem of medical data storage properly , after studying deeply on multimedia database system , we give the method of constructing medical multimedia database system not only based on traditional rdbs but also on oodbs in a creative way
为了解决数据存储的问题，作者在深入研究了多媒体数据库技术后，除了实现在传统的关系数据库上构造医学多媒体数据库之外，还提出了基于面向对象数据库技术构造医学多媒体数据库的设计方案。 |
| 9. | In the past 30 years , the database system has already developed the no relational model , the next generation object - relational database system ( ordbs ) , the third generation object oriented database system ( oodbs ) . in the 1990s later , for the speed of the internet technique , the website base based on the internet promoted the information resource share
经过30年的发展，数据库系统已经历了第一非关系型数据库、第二代关系型数据库( ordbs )的发展到面向对象数据库系统( oodbs )和各种专业数据库。九十年代后由于互联网络技术的飞速发展，基于互联网的网站数据库技术为信息资源的共享提供了技术上的保障。 |
