Chapter 6
1. Which of the following is an example of a pre-digital database? A library's card-catalog A cash register receipt A doctor's office invoice A list of sales totals on a spreadsheet An SQL database
A library's card-catalog
1. Which of the following statements about data warehouses is not true? They store supply data to be used across the enterprise for management analysis and decision making. Data warehouse systems provide a range of ad hoc and standardized query tools, analytical tools, and graphical reporting facilities. They may include data from website transactions. Data warehouse systems provide easy-to-use tools for managers to easily update data. Data warehouses make data available for anyone to access as needed.
Data warehouse systems provide easy-to-use tools for managers to easily update data.
1. Which of the following is an example of a company whose business model is based on access to large databases through the web? Gartner Fortune IBM Microsoft Facebook
1. What is the first step you should take in managing data for a firm? Identify the data needed to run the business. Cleanse the data before importing it to any database. Normalize the data before importing to a database. Audit your data quality. Remove redundancy.
Identify the data needed to run the business.
1. All of the following are tools or technologies for extracting information from unstructured data sets except: sentiment analysis software. SQL queries. Hadoop. a non-relational DBMS. text mining.
SQL queries.
1. What is the purpose of a DBMS's data definition function? Storing and managing the data in the database Storing definitions of data elements Normalizing the database Structuring the database Ensuring consistency of relationships
Structuring the database
1. Which of the following best illustrates the relationship between entities and attributes? The entity CUSTOMER with the attribute PRODUCT The entity CUSTOMER with the attribute ADDRESS The entity PRODUCT with the attribute PURCHASE The entity PRODUCT with the attribute CUSTOMER The entity ADDRESS with the attribute CUSTOMER
The entity CUSTOMER with the attribute ADDRESS
1. Which of the following would you use to find out which websites with content related to database design were the most often linked to by other websites? Web usage mining Web server mining Web structure mining Web content mining Web protocol mining
Web structure mining
1. Which of the following would you use to find patterns in user interaction data recorded by web servers? Web usage mining Web server mining Web structure mining Web content mining Web protocol mining
Web usage mining
1. Pre-configured hardware-software systems that use both relational and non-relational technology optimized for analyzing large datasets are referred to as: hybrid DBMS. Hadoop. BI. analytic platforms. data marts.
analytic platforms.
1. Tools for consolidating, analyzing, and providing access to vast amounts of data to help users make better business decisions are known as: DSS. business intelligence. OLAP. data mining. in-memory computing.
business intelligence.
1. The select operation: combines relational tables to provide the user with more information than is otherwise available. creates a subset consisting of columns 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. specifies the content of the database.
creates a subset consisting of all records in the file that meet stated criteria.
1. The project operation: combines relational tables to provide the user with more information than is otherwise available. creates a subset consisting of columns in a table. organizes elements into segments. identifies the table from which the columns will be selected. stores definitions of data elements.
creates a subset consisting of columns in a table.
1. A(n) ________ is a structured survey of the accuracy and level of completeness of the data in an information system. data quality audit systems analysis systems audit data analysis data overview
data quality audit
1. The confusion created by ________ makes it difficult for companies to create customer relationship management, supply chain management, or enterprise systems that integrate data from different sources. batch processing data redundancy data independence online processing data freedom
data redundancy
1. Within a corporate information services department, the task of establishing the physical database and its logical relations are responsibilities of the ________ function. data management data administration server administration data modeling database administration
database administration
1. A(n) ________ is a dedicated computer in a client/server environment that hosts a DBMS. web server online server database server client server application server
database server
1. Data mining is more ________ than OLAP. data-focused multidimensional query oriented discovery driven streamlined
discovery driven
1. DBMS typically include report-generating tools in order to: retrieve and display data. display data in tables. display data in graphs. perform predictive analysis. display data in an easier-to-read-format.
display data in an easier-to-read-format.
1. A schematic of the entire database that describes the relationships in a database is called a(n): data dictionary. intersection relationship diagram. field key diagram. data definition diagram. entity-relationship diagram.
entity-relationship diagram.
1. In terms of the data relationships found by data mining, sequences refers to: events linked over time. patterns that describe a group to which an item belongs. occurrences linked to a single event. undiscovered groupings. classifications when no groups have yet been defined.
events linked over time.
1. Data mining is a tool for allowing users to: quickly compare transaction data gathered over many years. perform multidimensional data analysis. 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.
1. The most basic business database is comprised of: three tables: for suppliers, parts, and sales. four tables: for customers, suppliers, parts, and sales. four tables: for customers, suppliers, sales, and employees. five tables: for customers, employees, suppliers, parts, and sales. attributes instead of tables.
five tables: for customers, employees, suppliers, parts, and sales.
1. A one-to-one relationship between two entities is symbolized in a diagram by a line that ends: in two short marks. in one short mark. with a crow's foot. with a crow's foot topped by a short mark. with a crow's foot topped by two short marks.
in two short marks.
1. A table that links two tables that have a many-to-many relationship is often called a(n): derived table. intersection relation. foreign table. entity-relationship table. derived relation.
intersection relation.
1. The process of streamlining data to minimize redundancy and awkward many-to-many relationships is called: normalization. data scrubbing. data cleansing. data administration. data management.
normalization.
1. OLAP is a tool that enables users to: obtain online answers to ad hoc questions in a rapid amount of time. view both logical and physical views of data. quickly diagram data relationships. normalize data. find hidden patterns in large databases.
obtain online answers to ad hoc questions in a rapid amount of time.
1. A field identified in a table as holding the unique identifier of the table's records is called the: primary key. key field. primary field. foreign key. identifying field.
primary key.
1. Relational database systems use ________ to ensure that relationships between coupled tables remain consistent. intersection relations one-to-one ordering entity-relationship diagrams foreign keys referential integrity rules
referential integrity rules
1. Links coming out of an online document are a sign of: richness or variety of topics covered. popularity. data quality. data usage. marketing.
richness or variety of topics covered.
1. In a table for customers, the information about a single customer would reside in a single: field. entity. column. table. row.
row.
1. In a relational database, the three basic operations used to develop useful sets of data are: select, project, and where. select, join, and where. select, project, and join. select, from, and join. who, what, and where.
select, project, and join.
1. Common data quality problems include all of the following except: misspelled names. transposed numbers. incorrect codes. missing codes. Internet connectivity problems.
Internet connectivity problems.
1. Which of the following best describes the importance of creating an accurate data model for your business's database? It is not essential, as the data model itself is modified by the database continuously. It is critical, as without one, your data may be inaccurate, incomplete, or difficult to retrieve. It is essential, as table relationships cannot be created without an accurate data model. It is somewhat important, as the type of data model will define what kinds of data will be stored. It is unnecessary, as a well-designed database should not require one.
It is critical, as without one, your data may be inaccurate, incomplete, or difficult to retrieve.
1. You are working in the IT department of a small paper supply company and planning a new database that monitors employee benefits and productivity. What would be the relationship you need to establish between Employee_ID in the Employee table and Parking_spot_number in the Perks table? One-to-many One-to-one Many-to-many Many-to-one One-to-all
One-to-one
1. Which of the following is the type of logical database model that treats data as if they were stored in two-dimensional tables? Two-tiered DBMS Pre-digital DBMS Open source DBMS Hierarchical DBMS Relational DBMS
Relational DBMS
1. What are the relationships that the relational database is named for? Relationships between rows and columns Relationships between entities Relationships between fields and records Relationships between databases Relationships between attributes
Relationships between entities
1. Which of the following is the most prominent data manipulation language today? Access DB2 SQL Crystal Reports Hadoop
SQL
1. A characteristic or quality describing an entity is called a(n): field. tuple. key field. attribute. table.
attribute.
1. Detecting and correcting data in a database or file that are incorrect, incomplete, improperly formatted, or redundant is called: data auditing. defragmentation. data scrubbing. data optimization. data repair.
data scrubbing.
1. In clustering, a data mining tool will find: new groupings within data. related predictions from existing values. several events grouped by time. new associations. forecasts for future events.
new groupings within data.
1. Hadoop is a(n): NoSQL database technology that stores both data and procedures acting on the data as objects. data mining platform designed for storing and analyzing big data produced by web communications and transactions. open-source software framework designed for distributing data-processing over inexpensive computers. pre-configured hardware-software system designed for analyzing big data. high-speed platform used to analyze large data sets.
open-source software framework designed for distributing data-processing over inexpensive computers.
1. Links pointing to an online document are a sign of: richness or variety of topics covered. popularity. data quality. data usage. marketing.
popularity.
1. In a relational database, a record is also called a(n): tuple. key field. entity. field. table.
tuple.
1. A data ________ stores current and historical data of potential interest to decision makers throughout the company. warehouse mart archive mine center
warehouse
1. A one-to-many relationship between two entities is symbolized in a diagram by a line that ends: in two short marks. in one short mark. with a crow's foot. with a crow's foot preceded by a short mark. in three short marks.
with a crow's foot preceded by a short mark.
1. Access is a: DBMS for mobile devices. popular open-source DBMS. DBMS for midrange computers. DBMS for desktop PC systems. DBMS for mainframe computers.
DBMS for desktop PC systems.
1. Which of the following allows users to add, change, delete, or retrieve data in a database? Attribute generation Report generation tools Data dictionary Query wizard tool Data manipulation language
Data manipulation language
1. MongoDB and SimpleDB are both examples of: open-source databases. SQL databases. NoSQL databases. cloud databases. big data databases.
NoSQL databases.
1. A field identified in a record as holding the unique identifier for that record is called the: primary key. key field. primary field. foreign key. identifying field.
key field.
1. A DBMS makes the: relational database available for different analytical views. logical database available for different analytical views. physical database available for different relational views. relational database available for different physical views. physical database available for different logical views.
physical database available for different logical views.
1. The logical view of a database: shows how data are organized and structured on the storage media. presents an entry screen to the user. allows the creation of supplementary reports. presents data as they would be perceived by end users. shows the relationships between entities and attributes.
presents data as they would be perceived by end users.
1. Businesses use ________ tools to search and analyze unstructured data sets, such as emails and memos. Hadoop web mining text mining OLAP DBMS
text mining
1. 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? Referential integrity module Data definition diagram Entity-relationship diagram Relationship dictionary Data dictionary
Data dictionary
1. Which of the following database types would be best suited for storing multimedia? SQL DBMS Open-source DBMS Non-relational DBMS Cloud-based database NoSQL DBMS.
Non-relational DBMS
1. Which of the following enables users to view the same data in different ways using multiple dimensions? Hadoop SQL Big data Data mining OLAP
OLAP
1. The smallest unit of data a computer can handle is called a: file. record. field. byte. bit.
bit.
1. A data mart usually can be constructed more rapidly and at lower cost than a data warehouse because: it typically focuses on a single subject area or line of business. all the information is historical. it uses a web interface. all of the information belongs to a single company. it is open-source.
it typically focuses on a single subject area or line of business.
1. In terms of the data relationships found by data mining, associations refers to: events linked over time. patterns that describe a group to which an item belongs. occurrences linked to a single event. undiscovered groupings. classification when no groups have yet been defined.
occurrences linked to a single event.
1. MySQL is a: DBMS for mobile devices. programming language. mainframe relational DBMS. DBMS for desktop systems. popular open-source DBMS.
popular open-source DBMS.
