"Physical vs. Logical System Models" Please respond to the following:

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Your intern is confused about the difference between physical and logical system models. Explain the difference between the two models to her.

Nov 2nd, 2014

Logical Database Model

Logical database modeling is required for compiling business requirements and representing the requirements as a model. It is mainly associated with the gathering of business needs rather than the database design. The information that needs to be gathered is about organizational units, business entities, and business processes.

Physical database modeling deals with designing the actual database based on the requirements gathered during logical database modeling. All the information gathered is converted into relational models and business models. During physical modeling, objects are defined at a level called a schema level. A schema is considered a group of objects which are related to each other in a database.
Tables and columns are made according to the information provided during logical modeling

Nov 2nd, 2014

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Nov 2nd, 2014
Sep 25th, 2017
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