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Questions and Answers
What is characteristic of the conceptual schema?
What is characteristic of the conceptual schema?
- It defines the data processing rules
- It defines the physical storage of data
- It describes the structure and constraints of the whole database (correct)
- It defines data access control
What type of data model is typically used in a database that serves a community of users?
What type of data model is typically used in a database that serves a community of users?
- Physical data model
- Conceptual data model (correct)
- Logical data model
- Self-describing data model
What level of data modeling is concerned with the overall structure and constraints of the database?
What level of data modeling is concerned with the overall structure and constraints of the database?
- Conceptual level (correct)
- Internal level
- External level
- Physical level
What is the purpose of a conceptual schema in a database?
What is the purpose of a conceptual schema in a database?
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What type of data model is used to describe the physical storage of data?
What type of data model is used to describe the physical storage of data?
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