MIS Chapter 6 Quiz

You are creating a database to store temperature and wind data from various airports. Which of the following fields is the most likely candidate to use as the basis for a primary key in the Airport table?

Airport code

Which common database challenge is illustrated by a person receiving multiple copies of an L.L. Bean catalog, each addressed to a slightly different variation of his or her full name?

Data inconsistency

Data scrubbing is a more intensive corrective process than data cleansing.

False

In a client/server environment, a DBMS is located on a dedicated computer called a web server.

False

Which of the following technologies would you use to analyze the social media data collected by a major online retailer?

Hadoop

Which of the following tools enables users to view the same data in different ways using multiple dimensions?

OLAP

Which of the following best illustrates the relationship between entities and attributes?

The entity CUSTOMER with the attribute PURCHASE

A physical view shows data as it is actually organized and structured on the data storage media.

True

Every record in a file should contain at least one key field.

True

NoSQL technologies are used to manage sets of data that don't require the flexibility of tables and relations.

True

The term data governance refers to the policies and processes for managing the integrity and security of data in a firm.

True

You can use OLAP to perform multidimensional data analysis.

True

Which of the following would you use to find patterns in user interaction data recorded by a web server?

Web usage mining

The join operation:

combines relational tables to provide the user with more information than is otherwise available.

The select operation:

creates a subset consisting of all records in the file that meet stated criteria.

The term big data refers to all of the following except:

datasets with fewer than a billion records.

Data cleansing not only corrects errors but also:

enforces consistency among different sets of data.

A schematic of the entire database that describes the relationships in a database is called a(n):

entity-relationship diagram.

Data mining allows users to:

find hidden relationships in data.

A data warehouse is composed of:

historic and current internal data.

All of the following are issues with the traditional file environment except:

inability to develop specialized applications for functional areas.

An organization's rules for sharing, disseminating, acquiring, standardizing, classifying, and inventorying information is called a(n):

information policy.

A field identified in a record as holding the unique identifier for that record is called the:

key field.

A DBMS makes the:

physical database available for different logical views.

A field identified in a table as holding the unique identifier of the table's records is called the:

primary key.

Data ________ occurs when the same data is duplicated in multiple files of a database.

redundancy

A(n) ________ represent data as two-dimensional tables.

relational DBMS

In a table for customers, the information about a single customer resides in a single:

row.

In a relational database, the three basic operations used to develop useful sets of data are:

select, project, and join.

OLAP enables:

users to obtain online answers to ad-hoc questions in a rapid amount of time.