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Questions and Answers
Which level of the three-schema architecture describes physical storage structures and access paths?
Which level of the three-schema architecture describes physical storage structures and access paths?
- Conceptual schema
- Logical schema
- External schema
- Internal schema (correct)
Which level of the three-schema architecture describes the structure and constraints for the whole database?
Which level of the three-schema architecture describes the structure and constraints for the whole database?
- Conceptual schema (correct)
- External schema
- Internal schema
- Logical schema
Which level of the three-schema architecture describes the various user views?
Which level of the three-schema architecture describes the various user views?
- Internal schema
- External schema (correct)
- Conceptual schema
- Logical schema
Which data model is typically used for the internal schema?
Which data model is typically used for the internal schema?
Flashcards
Internal schema
Internal schema
Describes physical storage structures and access paths.
Conceptual schema
Conceptual schema
Describes the overall structure and constraints for the entire database.
External schema
External schema
Describes the various user views of the database.
Physical data model
Physical data model
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Study Notes
Three-Schema Architecture
- The Internal Schema describes physical storage structures and access paths, focusing on the storage and retrieval of data.
- The Conceptual Schema describes the structure and constraints for the whole database, defining the overall organization and relationships of the data.
- The External Schema describes the various user views, providing a customized perspective of the data for each user group.
Data Model
- The Physical Data Model is typically used for the internal schema, detailing the physical storage and access mechanisms.
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