The entity integrity rule states that a primary key attribute can be null.
Correct Answer:
Verified
Q57: Data structures include data organized in the
Q58: An enterprise key is a foreign key
Q59: The figure below is an example of
Q60: Sample data are useful for developing prototype
Q61: When transforming a one-to-one relationship, a new
Q63: In the figure below, each employee has
Q64: An identifier assigned to an associative entity
Q65: In the relational data model, associations between
Q66: A cascading delete removes all records in
Q67: The truncate table statement in SQL creates
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents