This study describes an alternative model, based on the principle of object-orientation, that demonstrates flexibility in handling information, and can be produced on a scale useful to the archaeologist. It compares the effectiveness of this object-oriented database to that of a relational database...
(1)选择File→New Model菜单项 (2)在左侧Model type中选择“Object-Oriented Model”(面向对象模型) (3)在右侧输入模型名称,选择语言 (4)选择类型 1.2 设计用例图 (1)定义用例 (2)定义角色 (3)定义关联 1.3 设计序列图 (1)定义角色 (2)定义对象 (3)定义消息 (4)定义激活期 1.4 设计类图 (1)定义类 ...
Here we focus solely on the classes, attributes, relationships and objects, yielding a simple object-oriented database model (CS,AS,RS,O), where CS={C1,C2,…,Ck}, AS={A1,A2,…,Al}, RS={R1,R2,…,Rm}, and O={o1,o2,…,on}. Then, we have: • RS⊆CS×CS is a binary ...
Attoui, A., Homond, P. (1992). MO2 An object Oriented Model for DataBase and Parallel Systems. In: Tjoa, A., Ramos, I. (eds) Database and Expert Systems Applications. Springer, Vienna. https://doi.org/10.1007/978-3-7091-7557-6_82 ...
Hruška, T., Kolenčík, P.: Comparison of Categorical Foundations of Object-Oriented Database Model. In Proceedings of 5th International Conference on Deductive and Object-Oriented Databases DOOD’97, F. Bry, R. Ramakrishnan, and K. Ramdmohanarao, Eds., vol. 1341 of LNCS, Springer, ...
以前一直是通过powerdesigner 的Object Oriented Model生成数据库表,再通过代码生成器生成nhibernate实体类,映射文件。感觉不是很直接。 使用powerdesigner 15的内置功能,就可以生成nhibernate的数据访问层。不过默认的用在实际环境中不是很好,可以改一下模板生成自已需要的。下面是实际步骤。
Implementation of the Object-Oriented Data Model in Oracle Database Oracle is a database management system supporting the object-oriented data model that is usually adopted by the storage technology of persistent object. Th... LJ He,DG Wang,SZ Bao,... - 《Applied Mechanics & Materials》 被引...
An OVUM report published in 1988 predicted that database systems adhering to an object-oriented data model as opposed to a relational data model would overtake relational database systems by the mid 1990s (OVUM, 1988). Although this clearly has not happened, there is no doubt that object-orien...
GIS (geographic infortnation system) data can be divided into three sorts: geometric data, geographic data and graphic data. TLDM proposed in this paper describes these three sorts of data and their relationships with object-oriented model. TLDM is used
O2, AnObjectOriented Data Model - Lecluse, Richard, et al. - 1987 () Citation Context ...ing us to compute a huge portion of the database only to discover later that salary(S), S≤500 is false or dept≪paystax(wstudent,X) is false. In contrast 14 Recall that the database ...