Question 1

Consider the relation shown in the exhibit. Which of the following SQL statements would properly add information for a new employee?

Options :

A : INSERT INTO Employee VALUES(0005, Tim, Bogart, 03-15-77);

B : INSERT INTO Employee(Emp_ID, First_Name, Last_Name, Birth_Date) VALUES(0004, Tim, Bogart, 03-15-77);

C : INSERT INTO Employee(Emp_ID, First_Name, Last_Name, Birth_Date) VALUES(0005, Tim, Bogart, 03-05-77);

D : INSERT INTO Employee(Emp_ID, First_Name, Last_Name, Birth_Date) VALUES(0005, Tim, Bogart, 03-05-77);

Answer: D

Question 2

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?

Options :

A : SELECT * FROM Customers WHERE Satisfaction_Rate > 80 OR Sales_Office = Atlanta

B : SELECT * FROM Customers WHERE Satisfaction_Rate <= 80 AND Sales_Office = Atlanta

C : SELECT * FROM Customers WHERE Satisfaction_Rate >= 80;

D : SELECT * FROM Customers WHERE Satisfaction_Rate >= 80 AND NOT Sales Office = Atlanta

Answer: A

Question 3

What improvement can be made to file-based databases to overcome their limitations?

Options :

A : Implement a tabular structure.

B : Gather files in a distributed repository

C : Use a hierarchical database file system.

D : Tightly couple database structure to database application programs.

Answer: A

Question 4

With regard to databases, what is normalization?

Options :

A : The process of reducing the cardinality of a relation

B : The process of organizing and refining relations

C : The process of duplicating data to reduce the number of tables

D : The process of limiting data stored in a table to a specific range of values

Answer: B

Question 5

Consider the Information Engineering diagram in the exhibit showing a conceptual data model of the relations BUILDING and RESIDENT. What is the next step in refining the data model?

Options :

A : Create intermediate entities

B : Create a logical data model.

C : Resolve many-to-many relationships

D : Identify and resolve complex relationships.

Answer: B

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