Which component in the three-tier database architecture handles the data-processing and business logic?

Which type of entity must reference another entity for its data to be meaningful?

Which statement accurately describes a characteristic of attributes?

Which database security technique prevents invalid data from being entered into the database?

To create a view, what are the minimal privileges that a user must have for the relations used to make the view?

Which of the following ACID properties requires that a transaction be executed in its entirety or not all?

Which security technique limits access by unauthorized users to parts of an enterprise database?

A foreign key maps to a:

Which characteristic is an advantage of a database management system?

Consider the following relation definitions:
STUDENT(
Student_Number: integer NOT NULL
Name: variable length character string length 20 )
Primary Key Student_Number
HOUSING(
Housing_ID: integer NOT NULL
Student_Number: integer NOT NULL
Building: variable length character string length 25 ) Primary Key Housing_ID
Foreign Key Student_Number References STUDENT(Student_Number) ON DELETE NO ACTION
ON UPDATE CASCADE
What are the referential constraints for the relations defined in these relation definitions?