What does a physical data model begin as?

What does a physical data model begin as?

• A. A final implementation model
• B. A structured representation of business processes
• C. An adaptation of the logical data model
• D. A high-level conceptual framework

Answer: (C)

A physical data model begins as an adaptation of the logical data model because it translates the abstract concepts and structures defined in the logical model into a format that can be implemented in a specific database management system. The logical data model outlines the relationships, entities, and attributes without delving into technical details or specifics like data types or physical storage structures. When transitioning to the physical model, the logical design is adjusted to accommodate the technical requirements and constraints of a chosen database technology, including performance considerations and physical storage design, such as indexing and partitioning. This process ensures that the logical concepts are effectively translated into a practical system that meets performance, scalability, and usability needs in a real-world environment.

A physical data model begins as an adaptation of the logical data model because it translates the abstract concepts and structures defined in the logical model into a format that can be implemented in a specific database management system. The logical data model outlines the relationships, entities, and attributes without delving into technical details or specifics like data types or physical storage structures. When transitioning to the physical model, the logical design is adjusted to accommodate the technical requirements and constraints of a chosen database technology, including performance considerations and physical storage design, such as indexing and partitioning. This process ensures that the logical concepts are effectively translated into a practical system that meets performance, scalability, and usability needs in a real-world environment.