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Questions and Answers
Which model describes the logical structure of a database?
Which model describes the logical structure of a database?
- Object-oriented model
- Relational model (correct)
- Hierarchical model
- Network model
What are the basic components of the relational model?
What are the basic components of the relational model?
- Tables and columns (correct)
- Tables and indexes
- Tables and rows
- Tables and keys
How is data redundancy handled in the relational database model?
How is data redundancy handled in the relational database model?
- By using foreign keys to reference duplicate data
- By duplicating data in multiple tables (correct)
- By using indexes to store duplicate data
- By removing all duplicate data
What is the purpose of indexing in a relational database?
What is the purpose of indexing in a relational database?
What is the purpose of the data dictionary and system catalog in the relational database model?
What is the purpose of the data dictionary and system catalog in the relational database model?
True or false: The relational database model's logical structure is described in Chapter 3?
True or false: The relational database model's logical structure is described in Chapter 3?
True or false: The relational model's basic components include entities and relationships?
True or false: The relational model's basic components include entities and relationships?
True or false: Relational database operators are used to manipulate relational table contents?
True or false: Relational database operators are used to manipulate relational table contents?
True or false: Data redundancy is handled efficiently in the relational database model?
True or false: Data redundancy is handled efficiently in the relational database model?
True or false: The purpose of indexing in a relational database is to improve data retrieval performance?
True or false: The purpose of indexing in a relational database is to improve data retrieval performance?
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