In the process of writing documents, there must be a system database design, so How to design the database? Let me first explain a concept to everyone:
CDM: Conceptual Data Model (CDM) is use
Tag: CDM
Generate CDM, PDM, and SQL using PowerDesigner
1. Personnel organization structure
2, conceptual model
New conceptual model
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PowerDesigner (5) – Concept Data Model (CDM Generate LDM, PDM and OOM)
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Conceptual Data Model (CDM): expresses the overall logical structure of data, which is independent of any software