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PowerDesigner 与数据建模
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2008-06-27
吴藩
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PowerDesigner 与数据建模
No.1 Data Modeling Tool
PowerDesigner separates data modeling in Conceptual Data Model (CDM) and Physical Data Model (PDM)
PowerDesigner uses Entity-Relationship (ER) notation for CDM
A CDM is independent of database
A CDM can generate several PDMs
A PDM is database specific
No.1 Data Modeling Tool
PowerDesigner separates data modeling in Conceptual Data Model (CDM) and Physical Data Model (PDM)
PowerDesigner uses Entity-Relationship (ER) notation for CDM
A CDM is independent of database
A CDM can generate several PDMs
A PDM is database specific
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