ITC 761 Chapter 6

Which of the following enables a DBMS to reduce data redundancy and inconsistency? Ability to create two-dimensional tables Ability to minimize isolated files with repeated data Ability to enforce referential integrity Use of a data dictionary Ability to couple program and data

Ability to minimize isolated files with repeated data

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? Address State City Airport code Day

Airport code

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? Data mining software Application server software Database server software Web server software Web browser software

Application server software

Which of the following enables you to create a script that allows a web server to communicate with a back-end database? CGI SQL HTML NoSQL Java

CGI

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? Create a forecast Identify associations Identify sequences Classify data Identify clusters

Classification data

All of the following are technologies used to analyze and manage big data except: analytic platforms. Hadoop. cloud computing. in-memory computing. noSQL.

Cloud computing

Microsoft SQL Server is a(n): DBMS for both desktops and mobile devices. Internet DBMS. DBMS for mobile devices. DBMS for midrange computers. desktop relational DBMS.

DBMS for midrange computers

In a large organization, which of the following functions would be responsible for policies and procedures for managing internal data resources? Data administration Information policy administration Data auditing Database management Database administration

Data administration

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 table Relationship dictionary Data definition diagram Data dictionary Entity-relationship diagram

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 redundancy Data accuracy Data duplication Data normalization Data inconsistency

Data inconsistency

Which of the following occurs when the same attribute in related data files has different values? Data discrepancy Data duplication Data redundancy Data dependence Data inconsistency

Data inconsistency

________ creates confusion that hampers the creation of information systems that integrate data from different sources. Batch processing Online processing Data independence Data redundancy Data quality

Data redundancy

________ creates confusion that hampers the creation of information systems that integrate data from different sources. Data quality Data redundancy Data independence Online processing Batch processing

Data redundancy

Detecting and correcting data in a database or file that are incorrect, incomplete, improperly formatted, or redundant is called: data normalization. defragmentation. data optimization. data scrubbing. data auditing.

Data scrubbing

The term big data refers to all of the following except: datasets with unstructured data. data from Web traffic. machine-generated data (i.e. from sensors). datasets with fewer than a billion records. data created by social media (i.e. tweets, Facebook Likes).

Datasets with fewer than a billion records

Which of the following is a grouping of characters into a word, a group of words, or a complete number? File Entity Field Tuple Table

Field

Data mining allows users to: find hidden relationships in data. quickly compare transaction data gathered over many years. obtain online answers to ad-hoc questions in a rapid amount of time. access the vast amounts of data in a data warehouse. summarize massive amounts of data into much smaller, traditional reports.

Find hidden relationships in data

In data mining, which of the following involves using a series of existing values to determine what other future values will be? Clustering Sequences Classifications Forecasting Associations

Forecasting

Which of the following technologies would you use to analyze the social media data collected by a major online retailer? Hadoop Data mart OLAP Data warehouse DBMS

Hadoop

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? Create a forecast Identify associations Identify clusters Identify sequences Classify data

Identify sequences

An organization's rules for sharing, disseminating, acquiring, standardizing, classifying, and inventorying information is called a(n): data governance policy. information policy. data policy. data definition file. data quality audit.

Information policy

Which of the following is not one of the benefits of a blockchain database? It allows administrators to manage data more effectively. It enables firms to create and verify translations on a network very rapidly. It prevents data from being altered retroactively. It enables the ability to use relational databases. It provides users with an integrated view of the data.

It enables firms to create and verify translations on a network very rapidly. MAYBE

A field identified in a record as holding the unique identifier for that record is called the: unique ID. key field. primary field. key attribute. primary key.

Key field

The fact that a traditional file system cannot respond to unanticipated information requirements in a timely fashion is an example of which of the following issues with traditional file systems? Poor security Lack of data sharing Program-data dependence Data redundancy Lack of flexibility

Lack of flexibility

Which of the following is a DBMS for desktop computers? Microsoft SQL Server Microsoft Access Oracle Database DB2 Microsoft Exchange

Microsoft access MAYBE

MongoDB and SimpleDB are both examples of: NoSQL databases. cloud databases. SQL databases. open source databases. big data databases.

NoSQL databases

In the context of data relationships, the term associations refers to: undiscovered groupings. occurrences linked to a single event. patterns that describe a group to which an item belongs. relationships between different customers. events linked over time.

Occurrences linked to a single event

A DBMS makes the: relational database available for different analytic views. physical database available for different logical views. physical database available for different analytic views. logical database available for different analytic views. relational database available for different logical views.

Physical database available for different logical views

Which of the following is the most prominent data manipulation language today? Crystal Reports NoSQL Access DB2 SQL

SQL

In a relational database, the three basic operations used to develop useful sets of data are: where, find, and select. select, project, and where. select, project, and join. where, from, and join. select, join, and where.

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? Data mining software Sentiment analysis software Text mining tools Data governance software Web mining technologies

Sentiment analysis software

In data mining, which of the following involves events linked over time? Associations Classifications Sequences Clustering Forecasting

Sequences

Which of the following is not one of the techniques used in web mining? Usage mining Structure mining Data mining Content mining Server mining

Server mining

Which of the following is not a method for performing a data quality audit? Surveying end users about their perceptions of data quality Surveying managers about their perceptions of data quality Surveying entire data files Surveying samples from data files Surveying data definition and query files

Surveying data definition and query files

________ tools are used to analyze large unstructured data sets, such as email, memos, and survey responses to discover patterns and relationships. Text mining In-memory OLAP Classification Clustering

Text mining

Which of the following best illustrates the relationship between entities and attributes? The entity CUSTOMER with the attribute PURCHASE The entity PRODUCT with the attribute PURCHASE The entity CUSTOMER with the attribute PRODUCT The entity PURCHASE with the attribute CUSTOMER The entity PRODUCT with the attribute CUSTOMER

The entity CUSTOMER with the attribute PURCHASE

Microsoft Access's data dictionary displays all of the following information about a field except the: the organization within the organization that is responsible for maintaining the data. description of the field. format of the field. type of the field. size of the field.

The organizations within the organization that is responsible for maintaining the data

In a relational database, a record is referred to in technical terms as a(n): key. tuple. table. entity. field.

Tuple

Which of the following would you use to find patterns in user interaction data recorded by a web server? Web server mining Web structure mining Web usage mining Web content mining Web protocol mining

Web usage mining

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. three short marks. one short mark. two short marks. a crow's foot.

a crow's foot topped by a short mark.

The join operation: creates a subset consisting of columns in a table. organizes elements into segments. combines relational tables to provide the user with more information than is otherwise available. creates a subset consisting of rows in a table. identifies the table from which the columns will be selected.

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

DBMSs typically include report generating tools in order to: retrieve and display data. display data in a more structured and polished format than would be possible just by querying. analyze the database's performance. perform predictive analysis. display data in graphs.

display data in a more structured and polished format than would be possible just by querying.

Data cleansing not only corrects errors but also: removes duplicate data. establishes logical relationships between data. normalizes data. structures data. enforces consistency among different sets of data.

enforces consistency among different sets of data.

Data cleansing not only corrects errors but also: structures data. establishes logical relationships between data. removes duplicate data. enforces consistency among different sets of data. normalizes data.

enforces consistency among different sets of data.

All of the following are issues with the traditional file environment except: data sharing. data inconsistency. poor security. inability to develop specialized applications for functional areas. lack of flexibility in creating ad-hoc reports.

inability to develop specialized applications for functional areas.

A DBMS makes the: logical database available for different analytic views. physical database available for different analytic views. relational database available for different logical views. physical database available for different logical views. relational database available for different analytic views.

physical database available for different logical views.

The logical view of a database: enables users to manipulate the logical structure of the database. displays the organization and structure of data on the physical storage media. presents data as they would be perceived by end users. includes a digital dashboard. allows the creation of supplementary reports.

presents data as they would be perceived by end users.

The logical view of a database: presents data as they would be perceived by end users. enables users to manipulate the logical structure of the database. includes a digital dashboard. allows the creation of supplementary reports. displays the organization and structure of data on the physical storage media.

presents data as they would be perceived by end users.

Data ________ occurs when the same data is duplicated in multiple files of a database. partitions independence repetition discrepancy redundancy

redundancy

In a table for customers, the information about a single customer resides in a single: field. column. entity. row. table.

row

A data lake is composed of: historic external data. internal and external data sources. historical data from legacy systems. historic and current internal data. unstructured and structured data that has not been analyzed.

unstructured and structured data that has not been analyzed.

OLAP enables: programmers to normalize data. users to quickly generate summary reports. users to view both logical and physical views of data. programmers to quickly diagram data relationships. users to obtain online answers to ad-hoc questions in a rapid amount of time.

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