Insulation between program and data and data abstraction
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"In case of insulation between programs and data, and data abstraction, the complete details of the structure and organization of individual files are saved in the catalog.
Conceptual representation of the files is referred by the Database users and application programs and the details of file storage are extracted by the DBMS when they are absolutely required by the file access modules of the DBMS. This does not happen in case of the traditional file systems
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