The Internal Model

•The database as “seen” by the DBMS•Maps the conceptual model to the DBMS•Depicts a specific representation of an internal model•Logical independence•Can change the internal model without affecting the conceptual model

The Internal Model•Database is considered as a collection of fixed – size record.•This model is closer to the physical level or file structure.•Requires the designer to match the conceptual model’s characteristics and constraints to those of the selected implementation model.•The entities in the conceptual model are mapped to the tables in the relational model.•The three most well-known models of this kind are the relational data model, the network data model and the hierarchical data model.

We hope you understandGroup members:

Samuel CotingueyEbenezer Villase

Ezrael GayaoJerome QuitolaTsams Palasico

Antoine LeeBienvenido Lubid