Which pair of relational algebraic operations requires union compatibility?
Answer : C
Consider the relation shown in the exhibit. Which of the following SQL statements would
return a relation that excludes all customers with a Satisfaction_Rate of less than or equal to 80
unless the Sales_Office is located in Atlanta?

Answer : A
Which subset of Structured Query Language (SQL) is used to perform operations such as data
retrieval or deletion on the data contained in a database?
Answer : D
Which type of relational integrity is violated if a primary key in a database has a null value?
Answer : A
Consider the relation shown in the exhibit. Which of the following SQL statements would
properly add information for a new employee?

Answer : D
What is the most important service provided by a database management system?
Answer : A
What is the highest normal form of the relation(s) shown in the exhibit?

Answer : C