Data Abstraction and Data Model
Data abstraction genrally refers to the suppression of details of data organization and storage and the highlighting of essential features for an improved understanding of data. One of the main charecteristics of the database approach is to support data abstraction so that different users may precieve data at their preffered level of detail.
A data model is a collection of concepts that can be used to describe the structure of the database provides the necessary means to achieve the abstraction.
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