mandatory
两张数据表：表A和表B；
如果A表是mandatory，那么至少要有一张B表与A表对应；
如果B表是mandatory，那么至少要有一张A表与B表对应；
PD8其实有4个版本，但是都是在安装的时候决定的，主要看你输入的是哪一个序列号，使用的是同一个安装包。它们为：
PowerDesigner PhysicalArchitect 只能做PDM
PowerDesigner DataArchitect 做PDM和CDM
PowerDesigner ObjectArchitect 做PDM, CDM, OOM
PowerDesigner Developer 做PDM和OOM
看来你安装的时候是输入了PowerDesigner Developer的序列号，如果想使用全部功能，请输入PowerDesigner ObjectArchitect的序列号
CDM:
Conceptual Data Model to model the overall logical structure of a database, independent from any software or data storage structure considerations. A valid CDM can be converted to a PDM or an OOM.
PDM:
Physical Data Model (PDM) to model the overall physical structure of a database, taking into account DBMS software or data storage structure considerations. A valid PDM can be converted to a CDM or an OOM.
OOM:
Object Oriented Model (OOM) to model a software system using an object-oriented approach for Java or other object languages. A valid OOM can be converted to a CDM or a PDM.
my process like CYT. ‘For me, generally I create tables first, draw the ERwin file from the database(Reverse Engineer). ‘ then repeat it and edit it.
it is more flexible
参考：
http://www.itpub.net/archiver/tid-2411-page-1.html
http://www.cnblogs.com/xingyukun/archive/2007/08/02/840293.html
Related Posts:
Sorry, the comment form is closed at this time.
No comments yet.