Question 1 of 25
Hints left: 3
Q1
The greatest threat to business security is often internal rather than external.
Q2
Concurrency control is important for which of the following reasons?
Q3
A transaction log shows before and after images of records that have been modified by transactions.
Q4
Backward recovery is used to reverse the changes made by transactions that have aborted, or terminated abnormally.
Q5
Which of the following is the preferred way to recover a database after a system failure?
Q6
Authorization tables contain highly sensitive data and should be protected by stringent security rules.
Q7
Data modeling and database design are key responsibilities of data and data base administration.
Q8
Incorrect data is easy to detect.
Q9
With concurrent processing involving updates, a database with concurrency control will be compromised due to interference between users.
Q10
A disaster recovery plan does not need to include the shipment of database backups to other sites.
Q11
An abstract class is which of the following?
Q12
The fact that the same operation may apply to two or more classes is called what?
Q13
The object-oriented development life cycle is which of the following?
Q14
The term Complete for a UML has the same meaning as which of the following for an EER diagram?
Q15
Failure to control confidentiality may lead to loss of competitiveness.
Q16
Mirrored databases are almost always provided in high-availability systems.
Q17
A data warehouse administrator is concerned with which of the following?
Q18
A UML diagram includes which of the following?
Q19
Information repositories are replacing data dictionaries in many organizations.
Q20
Composition is a stronger form of which of the following?
Q21
Multiplicity is the same as what concept for an ERD?
Q22
The restore/rerun technique involves reprocessing the day's transactions up to the point of failure.
Q23
To build a data warehouse and develop business intelligence applications, it is important that an organization build and maintain a comprehensive repository.
Q24
Queries that do full table scans should be avoided.
Q25
Databases are not the property of a single function or individual within the organization.