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Database Logical And Physical Design. A general understanding to the three models is that, business analyst uses conceptual and logical model for modeling the data required and produced by system from a business angle, while database designer refines the early design to produce the physical model for presenting physical database structure ready for database construction. Logical design includes definition of entity relationships and normal forms;
Database Systems A Practical Approach to Design, Implementation, and from viapay.dk
The software tools provide significant value. Physical database model showcases data to be implemented. A logical database uses only a hierarchical structure of tables i.e.
Database Systems A Practical Approach to Design, Implementation, and
Whereas physical database modeling is mainly required for actual designing of the database. A general understanding to the three models is that, business analyst uses conceptual and logical model for modeling the data required and produced by system from a business angle, while database designer refines the early design to produce the physical model for presenting physical database structure ready for database construction. Logical database designs are concerned with the what, and in contrast, physical database design is concerned with the how. it requires diverse skills that are often found in different people. This last phase will be taken into consideration in this thesis in a marginal way.
