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Which type of database maintains the hardware and operating system offsite and is accessed via Internet-based applications?
Cloud database
hat correctly explain the roles of data marts and data warehouses in a decision support system (DSS).
Data warehouses are used to analyze long-term, historical data for an organization's strategic purposes, because they store data from different time periods and subject areas. Data marts are used to analyze recent data that a department needs for operational troubleshooting and management, because they collect and measure data specific to that area.
Which of the following tasks are NoSQL databases designed to do? More than one answer may be correct.
Manage large datasets across different platforms Create queries from the data created from web apps Analyze nonstructured data
Which of these steps in the data mining process most likely involves the actual "mining" or "Knowledge Discovery in Data"?
Model building and evaluation
Which of the following are examples of data objects that a relational database management system (RDBMS) may include?
Names of customers and records of when merchandise was returned Addresses of the company's wholesalers and the number of items in a company's inventor
Which of the following is an example of an advantage of being able to access a database via the web?
Turnover among telephone customer service representatives at your company is high and they receive only brief training before they interact with customers. Reps need to be able to access your sales database to assist customers who call. Your product is primarily sold in developing countries where most of your suppliers are small business owners who access the Internet via a mobile device instead of a computer. Your company needs suppliers in all countries to be able to access your inventory database.
A leading manufacturer of fitness trackers partners with a large health insurance network. Insurance network members receive a discounted fitness tracker and financial rewards for setting and achieving tracked personal fitness goals. Which characteristic of the resulting Big Data would be most directly affected by a tracker software error that counted users' arm movements as steps?
Veracity
A corporate sales organization is hosting its annual regional meeting. It needs to book a hotel within the region where attendees will stay for three days and two nights. The hotel must have: 30 standard hotel rooms for its sales reps, 5 suites for the regional managers, and 5 conference rooms to hold training sessions. There also must be two restaurants within walking distance of the hotel that can accommodate a dinner reservation for 40 people. Which web mining technique would the organization use to narrow down the choices of hotels to those that fit these parameters?
Web content mining
When you need to link two tables in a database that do not have a field in common, one solution is to create a ___.
foreign key
Given the Four V's of Big Data, which of the following organizations most likely uses Big Data?
A leading news website that uses data about its visitors' and followers' activities to shape its news coverage, customize news alerts, and gain advertisers and subscribers.
For which of the following tasks would it be more appropriate to use a NoSQL database than a SQL database?
Analyzing large volumes of data that are stored in the cloud Organizing user-generated comments from your company's Twitter, Facebook, and Instagram pages
What is the purpose of an SQL statement?
Answer questions about the database
Relational database management systems (RDBMS) have a variety of tools that can be used to execute/run queries. One of these query tools is the ability to execute/run action queries. Which of the following are common types of action queries?
Append query Update query Delete query
In analyzing transactions, Walmart discovered that many people who buy Children's Tylenol in their stores also buy orange juice in the same transaction. They used this information to discount Children's Tylenol but raise the price of orange juice during flu season. What is the name of the approach Walmart used to discover this information
Big data
Which of the following are advantages of cloud databases over a traditional database?
Can support both SQL and NoSQL databases Are maintained by an external provider, such as Amazon or Oracle Can be accessed through an application programming interface (API)
Which of the following improvements might be the direct outcome of a data quality audit?
Elimination of redundant metadata and strengthened referential integrity Corrections in source data issues and ways to examine data over time Recommendations for a new data management design and prescriptions for preserving data quality
In the two tables in the image, which field is a foreign key?
FK OwnerID
Which of the following correctly describes a type of data mart
Hybrid data marts combine data from a data warehouse and other collection systems. Dependent data marts extract data from a data warehouse when it is needed. Independent data marts are separate from a data warehouse and are created in order to collect data relating only to particular business functions.
Why is it important for all organizations, no matter how small, to create and implement organizational information policies?
Organizational data are a critical asset; it is important to ensure its security.
Which of the following is a task that an SQL statement would be expected to perform?
Retrieve data
From the following list, select all of the examples of a relationship that an entity-relationship diagram (ERD) could be used to describe.
The courses a student is taking The employees who report to a specific manager in an organizational chart Products a customer has ordered
Which of the following statements correctly describes a defining characteristic of Big Data?
The data are measured in terabytes (trillions of bytes) or even larger units. The data are from structured and unstructured sources and exist in multiple forms.
Which of the following is an example of the type of information data mining can yield
The likelihood of a Gen-X female who makes $50,000 and is divorced with no children will take a trip within a year of her divorce being finalized Middle-aged males who are members of their local church bible study group are more inclined to vote than younger males who are also members of local bible study groups.
A mid-sized independent hardware store has recently merged with a large national chain. The local owners have long used a reliable database to manage inventory. Their database has been essential in balancing orders for seasonal merchandise with the problem of limited shelf space. The merger will soon entail managing many more types of data, as the national chain has approved lists of suppliers, precise requirements for recording transactions, specific human resources procedures, and more. Which statement best summarizes what the local managers will be able to do for the first time when they start using the parent company's database management system (DBMS)?
The managers will be able to create, edit, and store data in a secure manner across all data types required by the parent company.
Data mining is best described as ______.
a research and analysis technique in which data analysts employ mathematical tools and artificial intelligence (AI) to search large volumes of data and discover less-obvious patterns and trends
The four steps in a data quality audit are ______.
assessment, design, transformation, and monitoring
Organizations often use data scrubbing software because it ______.
automatically analyzes data, then fixes any errors, and consistently formats the data according to an organization's guidelines
A company's periodic web mining exercise to determine its best-selling products resulted in the discovery that a product sold in conjunction with a movie released 10 years ago has recently become coveted by nostalgia fans. The company redesigned its website so that interested consumers can purchase the product right on the homepage. This company has used web mining to
improve site usability
A company's periodic web mining exercise to determine its best-selling products resulted in the discovery that a product sold in conjunction with a movie released 10 years ago has recently become coveted by nostalgia fans. The company redesigned its website so that interested consumers can purchase the product right on the homepage. This company has used web mining to ______.
improve site usability
Businesses can use in-memory computing to conduct or support almost any task that ______.
involves the near-instantaneous processing and analysis of huge volumes of data
What is the primary role of a database administrator (DBA)?
o monitor the database and ensure that it functions when needed
So that users can find specific information quickly by using filters based on specific criteria, databases allow the creation of ___.
queries
A link between tables in a relational database that defines how the data are related is called a _____.
relationship
Which of the following is an example of what an information policy could specify?
A health insurance company stores data that patients self-report as inputs on its website, but does not link that data with information about the patient's search history. A user agreement on a website indicates that it will store the browsing history linked to the IP address for an indefinite amount of time and reserves the right to sell that information to interested parties. A large corporation grants access to salary information to the direct supervisors of employees and to members of the Human Resources department who administer payroll.
Which of the following is an example of why a database should be accessible through the web?
A large portion of a company's workforce are contract workers who work offsite, using their own devices to complete their work. A company has recently scaled its operations so that it competes internationally and needs business partners all over the world to have access to its database. A small distributor with limited staffing wants customers to be able to track the status of their orders without having to contact a customer service representative.
Which of the following is an example of a web experience that could be improved by web mining?
A small online retailer has noticed that most people viewing products from its gaming pages browse for about 5 minutes and end up making purchases, but over 75 percent of people viewing products from its home goods pages leave within the first 30 seconds. It wants information on how the two pages are different. A subscription learning app that targets kindergarten students wants to meaningfully update its lessons so that visually impaired children can use them. A travel company wants to know what amenities people search for before booking a hotel for a vacation so that the company can increase the coverage of those amenities on their website.
Which of the following tasks can businesses perform with the help of in-memory computing?
Alerting online customers that the desired item is out of stock, before the order is placed Mapping alternate driving routes to help truckers avoid bad weather and traffic jams Predicting the impact of news on stock prices and conducting immediate transactions
How are data marts different from data warehouses?
Data marts focus on an individual department or business function and manage less data than a data warehouse.
What term describes the process organizations use to discover meaningful relationships and patterns among the data sets it has collected?
Data mining
Brooks Accounting is no stranger to audits—for their customers. Managers discovered some issues in services and billing they suspected were linked to their database practices rather than to employee competence. Brooks hired an outside firm to perform a data quality audit. Which statement best describes how the audit process identified problems
Data profiling analyzed the accounting firm's data sources.
Which of the following statements correctly describes referential integrity?
Referential integrity applies to data quality within the structure of a relational database. For referential integrity to exist, data on both sides of the table relationship must be present.
Why do large, data-driven companies use analytic platforms?
They generate vast amounts of organizational data and need to be able to rapidly analyze and interpret this information to make informed business decisions.
Why must database administrators (DBA) be trained or experienced in using an organization's specific database platform?
They must troubleshoot or solve problems with the database when necessary.
Referential integrity states that structural relationships in relational databases must ______.
be consistent: a foreign key field that references a primary key field must agree with that primary key
Establishing how an organization manages its data and making sure the organization adheres to these methods is a function called ______.
data administration
Organizing data so that data are in simple tables without any redundancies is known as __________.
data normalization
Organizations use data warehouses mainly to ______.
facilitate the analysis of data from multiple sources
To control how information is entered into a database, programmers and database administrators create ___ to help ensure data integrity.
forms
The primary purpose of a business intelligence (BI) system is to ______.
help a business make strategic decisions based on its own data
Businesses use business intelligence (BI) systems to ___.
help them make decisions that are informed by business data and facts
The Important goals of data governance (DG) are to ______.
protect data from risk, misuse, regulatory noncompliance, and quality and cost issues
Which of the following is an example of an organization analyzing predictive behavior with the goal of creating new offerings?
An in-home healthcare provider tracks the hospital readmission rates of elderly people who live alone after they received care for falling in their homes. Netflix tracks what users who viewed all three seasons of Stranger Things also had in their queues.
Which statement best summarizes how organizations use data warehouses?
Data warehouses are used to store data from multiple sources for collective analysis.
Why is online analytical processing (OLAP) software included in many business intelligence (BI) software applications?
It allows users to view data from different perspectives or angles and gain new insights. It allows reports and analytics to be exported to more user-friendly, front-end tools. It allows for sophisticated data and trend analysis, data modeling, and forecasting.
How does the structure of an online analytical processing (OLAP) database shape its core functionality?
Its use of data cubes allows users to conduct complex queries, analyses, and modeling by taking multiple dimensions of data (types or levels) into account and viewing data from multiple viewpoints or "slices" (such as by date and location).
For which task is a data mart more useful or appropriate than a data warehouse?
Resolving a current problem with a specific type of inventory, purchase transaction, or supply chain
Which statement best summarizes how a data governance (DG) plan is created?
The plan is tailored to the organization's specific goals, objectives, and activities.
A query is a request for information stored in a database. One of the benefits of using a database to store information is the ability to run a query. In relational database management systems (RDBMS), there are a variety of query tools that are used to execute and run queries. Which of the following are tools used to run queries in an RDBMS?
Action queries SQL specific queries Crosstab queries
Which of the following would be a reason why an organization would use web usage mining?
An e-commerce business looking to improve the customer experience on its website to boost sales wants to know what types of sites users go to after visiting their website and putting items in their cart, but not completing a purchase. A new social media platform wants to increase engagement and is looking to know what content its most frequent users spend the most time engaging with.
that correctly explain the roles of data marts and data warehouses in a decision support system (DSS).
Data warehouses are used to analyze long-term, historical data for an organization's strategic purposes, because they store data from different time periods and subject areas. Data marts are used to analyze recent data that a department needs for operational troubleshooting and management, because they collect and measure data specific to that area.
Which of the following is a task that data administration would be responsible for?
Defining policies stating that employees may not share data with people who are not employees of the organization. Determining that two-factor identification must be used to access data that the company has determined to be confidential. Deciding that the organization will begin collecting and storing users' locations upon the release of the next generation software for its mobile app.
Your college has a database with a Students table. Which two of the following could be a primary key in the table?
Social Security Number Student number
