Podcast
Play an AI-generated podcast conversation about this lesson
Questions and Answers
What is a semantic integrity constraint based on?
What is a semantic integrity constraint based on?
- The data types used in the database
- The specific application semantics (correct)
- The underlying database model
- The normalization rules followed
Which SQL feature allows expressing some semantic integrity constraints?
Which SQL feature allows expressing some semantic integrity constraints?
- CREATE TABLE
- CREATE INDEX
- CREATE TRIGGER (correct)
- CREATE VIEW
Which integrity constraints can be expressed using the CREATE TABLE statement in SQL?
Which integrity constraints can be expressed using the CREATE TABLE statement in SQL?
- Keys, null value permissibility, and referential integrity (correct)
- Complex business rules
- Semantic integrity constraints
- Triggers and assertions
Which operation is used to add a new tuple (row) to a relation (table)?
Which operation is used to add a new tuple (row) to a relation (table)?
Signup and view all the answers
What should update operations on a relation ensure?
What should update operations on a relation ensure?
Signup and view all the answers
What is a candidate key in SQL?
What is a candidate key in SQL?
Signup and view all the answers
Which constraint ensures that a value in one table must exist in another related table?
Which constraint ensures that a value in one table must exist in another related table?
Signup and view all the answers
What is an entity integrity constraint?
What is an entity integrity constraint?
Signup and view all the answers
Which type of constraint restricts the values that can be entered in a column?
Which type of constraint restricts the values that can be entered in a column?
Signup and view all the answers
What is a relational integrity constraint?
What is a relational integrity constraint?
Signup and view all the answers
