Data Modeling Classic Tutorial - Data Model classification and modeling

 

Comparative data classification model

 

Model Type	Model definition	Relationship Modeling (Accurate to express business rules through the process of how business operations)	Dimensional modeling (Described by how accurate navigation service is being monitored)
Conceptual Model	Description of business requirements within a preset range	Preset key concepts of business and the corresponding business rules, such as "each customer can order one or more orders." "Single Page" data rules (20 within the concept of)	Focus on one or more metrics of key concepts, such as "I want to browse the customer's total sales." "Single Page" Navigation (within 20 Concept)
Logic Model	The table below details business solutions	For a given application or business process, you need to clear all of the properties, according to strict business rules and technical independence, they are concisely organized into entities, such as "Every customer ID can only retrieve a customer's last name "	For a given reporting applications, all need to be clearly associated with the measure concerned and independent technical attributes, such as "I want to know the total sales of certain customers, and know the name of the customer"
Physical Model	Detailed technical solutions	For a particular technology, implementation and modification of the LDM. Such as to increase the speed of retrieval, we can add an index on customer last name, etc.