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shuijian-xu / hive

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conceptual data model？ #23

Open shuijian-xu opened 5 years ago

shuijian-xu commented 5 years ago

The first model that was developed was called the conceptual data model and it was usually represented by an entity relationship diagram (ERD). The purpose of the ERD was to provide an abstraction that represented the data requirements of the organization.

shuijian-xu commented 5 years ago

One major characteristic of the conceptual model is that it ought to be able to be implemented using any type of database.

The idea was that the DBMS to be ultimately deployed should not have any influence over the way in which the requirements were expressed. So the conceptual data model should not imply the technology to be used in implementing the solution.