Referential integrity controls relationships between :

In an object oriented model, one object can access data of another object by passing?

• [A] Instance variable
• [B] Variable
• [C] Message
• [D] Function

The concept of data independence is similar to the concept of ?

• [A] Data Type
• [B] Abstract data type
• [C] Consolidation
• [D] Isolation

An intrusion detection system does not perform which of the following?

• [A] Tries to identify attempts to hack into a computer system.
• [B] May monitor packets passing over the network.
• [C] May transmit message packets to the correct destination.
• [D] Set up deception systems that attempt to trap hackers.

How many copies of the database schema are typically used in the redesign process?

• [A] One
• [B] Two
• [C] three
• [D] four

What is the result of the following SQL statement ?

SELECT A.Employee_Name, B.Spouse_Name
FROM Employee A LEFT OUTER JOIN Spouse B
ON A. Employee_ID = B.Employee_ID

• [A] A list of employee�??s spouses
• [B] A list of all employees that have spouses, with spouse names included in the list
• [C] A list of all employee�??s names, including the name of their spouse if they have one
• [D] Two lists : One list of employees, the other of spouses