Chapter 5

Question 1

a structured collection of data stored for use by one or more applications.

Answer 1

Database

Question 2

a suite of programs for constructing and maintaining the database and for offering ad hoc query facilities to multiple users and applications

Answer 2

database management system (DBMS)

Question 3

provides a uniform interface to the database for users and applications

Answer 3

query language

Question 4

What is the basic building block of a relational database

Answer 4

table of data

Question 5

In relational database parlance the basic building block is

Answer 5

relation

Question 6

rows are referred to as

Answer 6

tuples

Question 7

columns are referred to as

Answer 7

attributes

Question 8

is defined to be a portion of a row used to uniquely identify a row in a table

Answer 8

primary key

Question 9

to create a relationship between two tables, the attributes that define the primary key in one table must appear as attributes in another table, where they are referred to as

Answer 9

foreign keys

Question 10

a ___ is a virtual table. a ____ is the result of a query that returns selected rows and columns from one or more tables.

Answer 10

view

Question 11

the process of performing authorized queries and deducing unauthorized information from legitimate responses received.

Answer 11

inference

Question 12

the information transfer path by which unauthorized data is obtained if referred to as ____

Answer 12

inference channel

Question 13

Statistics are derived from a database by means of a _____

Answer 13

characteristic formula

Question 14

where a user may infer confidential information about individual entities represented in the SDB

Answer 14

Compromise

Question 15

Protection of an SDB. ____ rejects a query that can lead to a compromise. The answers provided are accurate

Answer 15

query restriction

Question 16

protection of an SDB. ____ provides answers to all queries, but the answers are approximate

Answer 16

perturbation

Question 17

What is the simplest form of query restriction

Answer 17

query size restriction

Question 18

attribute values are exchanged (swapped) between records in sufficient quantity so that nothing can be deduced from the disclosure of individual records.

Answer 18

data swapping

Question 19

the data in the SDB can be modified (perturbed) so as to produce statistics that cannot be used to infer values for individual record.

Answer 19

data perturbation

Question 20

when a statistical query is made, the system can generate statistics that are modified from those that the original database would provide, again thwarting attempts to gain knowledge of individual records; this is referred to as _____

Answer 20

output perturbation

Question 21

What is the main challenge in the use of perturbation techniques

Answer 21

to determine the average size of the error to be used.

Question 22

As the size of the database grows, the effectiveness of perturbation techniques _____

Answer 22

increase

Question 23

On of two Disadvantages for database encryption:

authorized users must have access to decryption key for the data for which they have access.

Answer 23

Key Management

Question 24

On of two Disadvantages for database encryption:

when part or all of the database is encrypted, it becomes more difficult to perform record searching.

Answer 24

Inflexibility

Question 25

____ is a complex collection of hardware and software. It requires a large storage capacity and requires skilled personnel to perform maintenance, disaster protection, update, and security.

Answer 25

DBMS (database management system)

Question 26

A model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources that can be rapidly provisioned and released with minimal management effort or service provider interaction.

Answer 26

cloud computing