MIS 6
A one-to-many relationship between two entities is symbolized in a diagram by a line that ends with:
A crow's foot topped by a short mark
Which of the following enables a DBMS to reduce data redundancy and inconsistency?
Ability to minimize isolated files with repeated data
Microsoft's DBMS that includes built-in report generation and reporting is called ________.
Access
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
Amazon is one of the first to provide cloud computing relational databases. This effort is called ________.
Amazon Relational Database
According to Jack's explanation of the structure of relational database tables, which of the following statements about columns and rows is true?
Each row is a unique record for one of the items in the table and each column is an attribute of the item.
Which of the following technologies would you use to analyze the social media data collected by a major online retailer?
Hadoop
In a large organization, which of the following functions would be responsible for physical database design and maintenance?
database administration
________ is the most popular NoSQL DBMS.
Hadoop
The SQL ________ statement allows you to combine two different tables.
JOIN
_________ is a widely used open source DBMS.
MySQL
An emerging non-relational database management system is called ________.
NoSQL
MongoDB and SimpleDB are both examples of:
NoSQL databases
Which of the following tools enables users to view the same data in different ways using multiple dimensions?
OLAP
Microsoft's most powerful DBMS is ________.
SQL server
SQL stands for ________.
Structured Query Language
________ tools are used to analyze large unstructured data sets, such as e-mail, memos, and survey responses to discover patterns and relationships.
Text mining
Which of the following best illustrates the relationship between entities and attributes?
The entity CUSTOMER with the attribute PURCHASE
According to the information presented in this video, a database management system (DBMS) is a software program for creating, processing, and _____ a database.
administering
Which of the following is software that handles all application operations between browser-based computers and a company's back-end business applications or databases?
application server software
A characteristic or quality that describes a particular database entity is called a(n):
attribute
Another name for a database field is a(n) ________.
attribute
A ________ is the smallest component in the computer system data hierarchy.
bit
A ________ is a component in the computer system data hierarchy that represents an ASCII character.
byte
In data mining, which of the following involves recognizing patterns that describe the group to which an item belongs by examining existing items and inferring a set of rules?
classifications
You work for a car rental agency and want to determine what characteristics are shared among your most loyal customers. To do this, you will want to use the data mining software you are using to do which of the following?
classify data
All of the following are technologies used to analyze and manage big data except:
cloud computing
The select operation:
creates a subset consisting of all records in the file that meet stated criteria.
The project operation
creates a subset consisting of columns in a table.
According to the information presented in this video, a spreadsheet is great to manage information about one thing (e.g., items for sale), but a _____ is preferred to manage information about more than one thing (e.g., items for sale and suppliers of items).
database
A(n) ________ is a collection of data organized to serve many applications efficiently.
database
Software that allows an organization to manage and provide access to data is a ________.
database management system
The term big data refers to all of the following except:
datasets with fewer than a billion records
In this video, Jack explains how metadata _____.
describe characteristics of each field
DBMSs typically include report generating tools in order to:
display data in an easier-to-read format
In data mining, which of the following involves using a series of existing values to determine what other future values will be?
forecasting
A ________ provides the link from one table to another table's primary key.
foreign key
A data warehouse is composed of:
historic and current internal data
You work for a retail clothing chain whose primary outlets are in shopping malls and are conducting an analysis of your customers and their preferences. You wish to find out if there are any particular activities that your customers engage in, or the types of purchases made in the month before or after purchasing select items from your store. To do this, you will want to use the data mining software you are using to do which of the following?
identify sequences
A one-to-one relationship between two entities is symbolized in a diagram by a line that ends:
in two short marks
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(n) ________ is an important resource for an organization to create, illustrating rules on how data is organized and who has access to what data.
information policy
As Jack explains to Kate, a database is a collection of _____ records.
integrated
A field identified in a record as holding the unique identifier for that record is called the:
key field
A ________ is an example of pre-digital data storage that is comparable to a database.
library card catalog
Which of the following is a DBMS for desktop computers?
microsoft access
The formal process to remove data problems such as repeating groups is called ________.
normalization
The process of streamlining data to minimize redundancy and awkward many-to-many relationships is called:
normalization
In the context of data relationships, the term associations refers to:
occurrences linked to a single event.
Although "Big Data" doesn't refer to a specific amount of data, it usually does involve ________.
petabytes
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
Another term for a key field is a ________.
primary key
The field that uniquely identifies a row in a relational database table is called a ________.
primary key
Another term for a database row is a(n) ________.
record
Data ________ occurs when the same data is duplicated in multiple files of a database.
redundancy
Which of the following enables you to create a script that allows a web server to communicate with a back-end database?
CGI
For DBMS's that do NOT include a reports generator, ________ is a popular option for large corporate DBMS.
Crystal Reports
Microsoft SQL Server is a
DBMS for midrange computers.
Which of the following is an automated or manual file that stores information about data elements and data characteristics such as usage, physical representation, ownership, authorization, and security?
data dictionary
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
Which of the following occurs when the same attribute in related data files has different values?
data inconsistency
________ creates confusion that hampers the creation of information systems that integrate data from different sources.
data redundancy
Detecting and correcting data in a database or file that are incorrect, incomplete, improperly formatted, or redundant is called:
data scrubbing
Data cleansing, working to identify and fix incorrect data, is also called ________.
data srubbing
A schematic of the entire database that describes the relationships in a database is called a(n):
entity-relationship diagram
A ________ is a component in the computer system data hierarchy that includes content such as Student ID 100, Course IS 101, and Grade A.
field
Which of the following is a grouping of characters into a word, a group of words, or a complete number?
field
A ________ is a component in the computer system data hierarchy consists of multiple records of the same type.
file
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
A household appliances manufacturer has hired you to help analyze its social media datasets to determine which of its refrigerators are seen as the most reliable. Which of the following tools would you use to analyze this data?
sentiment analysis software
In data mining, which of the following involves events linked over time?
sequences
Which of the following is not one of the techniques used in web mining?
server mining
Which of the following is not a method for performing a data quality audit?
surveying data definition and query files
In a relational database, a record is referred to in technical terms as a(n):
tuple
OLAP enables
users to obtain online answers to ad-hoc questions in a rapid amount of time
Which of the following would you use to find patterns in user interaction data recorded by a web server?
web usage mining
A(n) ________ is the most popular method to model a database.
entity-relationship (ER) model
