Difference Between Data Model and Schema From this…
0 reactions
Difference Between Data Model and Schema
From this: https://stackoverflow.com/questions/25093452/difference-between-data-model-and-database-schema-in-dbms , data model seems to be an abstraction for data and schema seems to be a blueprint.
This page https://en.wikipedia.org/wiki/Database_model lists various database models like relational, flat and network. So far good.
The book I'm reading (Fundamentals of Database Systems 7e, ch 3, pg 61) says
>Once the requirements have been collected and analyzed, the next step is to create a conceptual schema for the database, using a high-level conceptual data model.
But this wikipedia page https://en.wikipedia.org/wiki/Conceptual_schema seems to imply that both a model and a schema are the same.
>A conceptual schema or conceptual data model
Why is there so much discrepancy in defining a data model and a schema.
#technology
From this: https://stackoverflow.com/questions/25093452/difference-between-data-model-and-database-schema-in-dbms , data model seems to be an abstraction for data and schema seems to be a blueprint.
This page https://en.wikipedia.org/wiki/Database_model lists various database models like relational, flat and network. So far good.
The book I'm reading (Fundamentals of Database Systems 7e, ch 3, pg 61) says
>Once the requirements have been collected and analyzed, the next step is to create a conceptual schema for the database, using a high-level conceptual data model.
But this wikipedia page https://en.wikipedia.org/wiki/Conceptual_schema seems to imply that both a model and a schema are the same.
>A conceptual schema or conceptual data model
Why is there so much discrepancy in defining a data model and a schema.
#technology
| 3,000 mlx | |
| 5 | |
| 0 |