mis chapter 6

At what percent of capacity do most servers operate? 100% 80-90% 15-20% Approximately 70 percent 40-50%

15-20%

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

Ability to minimize isolated files with repeated data

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

CGI

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? Sequences Forecasting Clustering Classifications Associations

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

Classify data

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

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

Data dictionary

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

Data inconsistency

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

Data redundancy

In a large organization, which of the following functions would be responsible for physical database design and maintenance? Database management Information policy administration Data administration Data auditing Database administration

Database administration

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

Field

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

Forecasting

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 clusters Identify sequences Create a forecast Classify data Identify associations

Identify sequences

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? Lack of flexibility Data redundancy Poor security Lack of data sharing Program-data dependence

Lack of flexibility

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

Microsoft Access

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

NoSQL databases.

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

Sentiment analysis software

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

Sequences

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

Server mining

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

Surveying data definition and query files

Which of the following would you use to find patterns in user interaction data recorded by a web server? Web server mining Web usage mining Web content mining Web structure 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: two short marks. a crow's foot. one short mark. a crow's foot topped by a short mark. three short marks.

a crow's foot topped by a short mark.

A characteristic or quality that describes a particular database entity is called a(n): attribute. relationship. tuple. key field. field.

attribute.

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

historic and current internal data.

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

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): data quality audit. data definition file. data governance policy. data policy. information policy.

information policy.

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

key field.

Which of the following is not one of the benefits of a blockchain database? It allows administrators to manage data more effectively. 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.

no idea

The process of streamlining data to minimize redundancy and awkward many-to-many relationships is called: data defining. optimization. data scrubbing. data cleansing. normalization.

normalization.

A field identified in a table as holding the unique identifier of the table's records is called the: key field. unique ID. primary field. primary entity. primary key.

primary key.

A field identified in a table as holding the unique identifier of the table's records is called the: primary key. primary entity. primary field. key field. unique ID.

primary key.

A database ________ describes a database entity. byte value field file record

record

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

redundancy

A(n) ________ represent data as two-dimensional tables. object-oriented DBMS non-relational DBMS relational DBMS mobile DBMS hierarchical DBMS

relational DBMS

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

row

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

select, project, and join.

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

tuple.

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

Application server software

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 normalization Data inconsistency Data redundancy Data accuracy Data duplication

Data inconsistency

Which of the following is a specialized language that programmers use to add and change data in the database? Structured query language Data access language Data manipulation language Data definition language DBMS

Data manipulation language

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

Hadoop

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

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

A software program with a graphical user interface for displaying web pages and for accessing the web and other Internet resources is called a web: client. service. beacon. app. browser.

browser.

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

cloud computing.

The join operation: 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. organizes elements into segments. creates a subset consisting of columns in a table

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

The select operation: creates a subset consisting of rows in a table. identifies the table from which the columns will be selected. creates a subset consisting of all records in the file that meet stated criteria. creates a subset consisting of columns in a table. combines relational tables to provide the user with more information than is otherwise available.

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

The select operation: 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. creates a subset consisting of all records in the file that meet stated criteria. creates a subset consisting of columns in a table.

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

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

creates a subset consisting of columns in a table.

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

data scrubbing.

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

datasets with fewer than a billion records

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

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

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

enforces consistency among different sets of data

A schematic of the entire database that describes the relationships in a database is called a(n): data definition diagram. data analysis table. data dictionary. intersection relationship diagram. entity-relationship diagram.

entity-relationship diagram.

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

find hidden relationships in data.

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

he organization within the organization that is responsible for maintaining the data.

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

inability to develop specialized applications for functional areas.

A distributed database: uses Hadoop to process information. uses predictive analysis. uses SQL. is a database that is distributed across many business firms. is a database that is stored in multiple physical locations.

is a database that is stored in multiple physical locations.

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

occurrences linked to a single event.

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

physical database available for different logical views.

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

presents data as they would be perceived by end users.

Prewritten, commercially available sets of software programs that eliminate the need for a firm to write its own software programs for certain functions, are referred to as: software packages. open-source software. mashups. outsourced software. service level agreement

software packages.

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

the entity CUSTOMER with the attribute PURCHASE