0521筆記

FRSAD的概念模型包含哪些步驟？

創建這個模型的方法是FRBR 中採用的實體分析技術。這個概念模型的發展包含以下
幾步：
（1）既從用户任務也從特定領域的用户感興趣的關鍵對象出發分析構建。
（2）關注點並不在個人數據上，而是在數據描述的事物上。為模型創建的每個實體或屬性
          的對象在數據集中作為關鍵點提供服務。
（3）在更高一點的層次上，一個實體圖描述的是存在於一個實體類型和另一个實體類型之
          間正常存在的關係。
（4）每個實體的重要特徵或屬性將被標識。
（5）每一個屬性和關係都能映射为用户任务。关联值的权重被赋予每个属性和具体任务的
          特定参考以及用户感兴趣的对象实体。

The method used to build this conceptual model is the entity analysis technique used in
FRBR. The development of such a conceptual model consists of the following steps15:
1) The analysis starts with the user tasks as well as the key objects that are of
interest to users in a specific domain.
2) The attention is not on individual data but on the “things” the data describe. Each
of the objects of interest or entities defined for the model serves as the focal
point for a cluster of data.
3) At a higher level, an entity diagram depicts the relationships that normally hold
between one type of entity and another type of entity.
4) Important characteristics or attributes of each entity are then identified.
5) Each attribute and relationship is mapped to the user tasks. Relative values of
importance are assigned to each attribute and relationship with specific reference
to the task performed and the entity that is the object of the user’s interest.