Physical Data Base Design
The data described by a (logical) data base schema are not available to application programs or user inquiries until it has been realized physically, using the software and devices of the user’s installation. Physical data base design includes the preparation of a plan for that realization and its accomplishment. In the terminology of traditional systems design, physical design is analogous to the selection of a file organization, preparation of file record layouts, and the creation of the file itself.
KeywordsData Base Access Method Physical Design Logical Schema Customer Segment
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