Podcast
Questions and Answers
What is the primary purpose of the ANSI-SPARC three-level architecture?
What is the primary purpose of the ANSI-SPARC three-level architecture?
- To provide a framework for describing general database concepts and structures. (correct)
- To define a single unified schema for all database applications.
- To standardize the physical storage format for all database systems.
- To enforce data and program independence across all database systems.
Which of the following is NOT one of the three levels of data abstraction in the ANSI-SPARC architecture?
Which of the following is NOT one of the three levels of data abstraction in the ANSI-SPARC architecture?
- Logical schema (correct)
- Conceptual schema
- Internal (physical) schema
- External schema
What is the purpose of the external schema in the ANSI-SPARC architecture?
What is the purpose of the external schema in the ANSI-SPARC architecture?
- To provide a comprehensive view of the entire database.
- To represent the logical structure of the database.
- To provide a user-specific view of the database. (correct)
- To define the physical storage structure of the database.
Which level of the ANSI-SPARC architecture is closest to the physical storage level?
Which level of the ANSI-SPARC architecture is closest to the physical storage level?
What is the purpose of the conceptual schema in the ANSI-SPARC architecture?
What is the purpose of the conceptual schema in the ANSI-SPARC architecture?
According to the ANSI-SPARC architecture, which component is responsible for storing the database description (schema)?
According to the ANSI-SPARC architecture, which component is responsible for storing the database description (schema)?
Which of the following levels represents the view of the database as seen by individual users?
Which of the following levels represents the view of the database as seen by individual users?
Which level describes the logical structure of all data in the database and is defined by a Data Definition Language (DDL)?
Which level describes the logical structure of all data in the database and is defined by a Data Definition Language (DDL)?
What is the primary purpose of the Data Definition Language (DDL) used to define the conceptual schema?
What is the primary purpose of the Data Definition Language (DDL) used to define the conceptual schema?
Which of the following statements is true about the role of the external and conceptual levels in database design?
Which of the following statements is true about the role of the external and conceptual levels in database design?
What is the primary purpose of the internal level in a database management system?
What is the primary purpose of the internal level in a database management system?
Based on the example provided, what data type is used for the sid attribute in the Students table?
Based on the example provided, what data type is used for the sid attribute in the Students table?
