Difference between revisions of "Entities and Attributes"
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*Conceptual model: A data model, usually represented by an entity relationship diagram (ERD) | *Conceptual model: A data model, usually represented by an entity relationship diagram (ERD) | ||
** The client dream would be the conceptual model | |||
*Physical model: A design for an object (a car, a house, a database, etc) which includes implementation details such as size, volume, weight, etc) | *Physical model: A design for an object (a car, a house, a database, etc) which includes implementation details such as size, volume, weight, etc) | ||
** The physical reality will become the physical model | |||
Revision as of 22:01, 7 September 2017
- Conceptual model: A data model, usually represented by an entity relationship diagram (ERD)
- The client dream would be the conceptual model
- Physical model: A design for an object (a car, a house, a database, etc) which includes implementation details such as size, volume, weight, etc)
- The physical reality will become the physical model