Podcast
Play an AI-generated podcast conversation about this lesson
Questions and Answers
What is an entity in the relational model?
What is an entity in the relational model?
- A complex data type used to store multiple values
- A set of instructions for performing a specific task
- Something of importance to the user that needs to be represented in a database (correct)
- A one-dimensional table consisting of rows and columns
What is a relation in the relational model?
What is a relation in the relational model?
- A two-dimensional table consisting of rows and columns (correct)
- A type of constraint used to enforce data integrity
- A logical connection between different tables
- A graphical representation of data flow
What is the purpose of foreign keys in the relational model?
What is the purpose of foreign keys in the relational model?
- To store encrypted data for security purposes
- To represent relationships between tables (correct)
- To define primary keys in a table
- To enforce uniqueness of data in a column
What is the meaning of functional dependencies in the relational model?
What is the meaning of functional dependencies in the relational model?
Signup and view all the answers
What is the purpose of surrogate keys in the relational model?
What is the purpose of surrogate keys in the relational model?
Signup and view all the answers
