ITM100 CHAPTER 6 QUIZ

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Questions and Answers

What is the most popular type of DBMS today for PCs as well as for larger computers and mainframes?

  • Network DBMS
  • Hierarchical DBMS
  • Relational DBMS (correct)
  • Object-oriented DBMS

How does the DBMS help in reducing program development and maintenance costs?

  • By coupling programs and data tightly
  • By requiring detailed data description for each program
  • By increasing the complexity of ad hoc queries
  • By enabling data to stand on their own (correct)

What is the primary representation of data in relational databases?

  • Three-dimensional tables
  • Graph structures
  • Two-dimensional tables (correct)
  • One-dimensional arrays

Which DBMS is specifically mentioned as suitable for desktop systems?

<p>Microsoft Access (C)</p> Signup and view all the answers

Which type of database offers flexible data models and is used for managing large distributed data sets?

<p>NoSQL databases (B)</p> Signup and view all the answers

Which technology did AstraZeneca use for next-generation genome sequencing to develop drugs?

<p>MongoDB NoSQL database (C)</p> Signup and view all the answers

What type of database technology does Google offer as a cloud service?

<p>Spanner distributed database technology (B)</p> Signup and view all the answers

What do data warehouses store for decision makers?

<p>Both current and historical data (A)</p> Signup and view all the answers

What is the purpose of Crystal Reports in the context of databases?

<p>Report generation for structured data display (B)</p> Signup and view all the answers

Which type of database technology is used for creating and verifying transactions?

<p>Blockchain (A)</p> Signup and view all the answers

What type of databases require conceptual and physical designs with relational and nonrelational models?

<p>Relational databases (D)</p> Signup and view all the answers

Which company used Oracle NoSQL Database for managing large distributed data sets?

<p>None of the above (D)</p> Signup and view all the answers

What type of database technology do cloud computing vendors offer as a service?

<p>Both relational database engines and distributed databases (B)</p> Signup and view all the answers

What is the primary function of Microsoft Access in terms of database management?

<p>Developing desktop system applications (D)</p> Signup and view all the answers

Which type of databases store current and historical data for decision makers?

<p>Data warehouses (C)</p> Signup and view all the answers

What is the main purpose of a distributed database technology like Spanner offered by Google?

<p>Managing large distributed data sets (A)</p> Signup and view all the answers

What is the main purpose of a data mart?

<p>To provide rapid access to data for specific user populations (A)</p> Signup and view all the answers

Which company uses data marts for point-of-sale data, college bookstore sales, and online sales?

<p>Barnes &amp; Noble (D)</p> Signup and view all the answers

What is one of the key features of Hadoop?

<p>Distributed parallel processing (D)</p> Signup and view all the answers

Which database provides rapid access to data stored on HDFS?

<p>HBase (B)</p> Signup and view all the answers

What type of data can Hadoop process?

<p>Loosely structured data and complex data (D)</p> Signup and view all the answers

How does Hadoop run?

<p>On a cluster of inexpensive servers (D)</p> Signup and view all the answers

What is a common use of Hadoop in companies?

<p>Analyzing large data volumes (A)</p> Signup and view all the answers

What is the main advantage of in-memory computing?

<p>Eliminating bottlenecks and shortening query response times (D)</p> Signup and view all the answers

Which products are leading in-memory database products?

<p>SAP HANA, Oracle Database In-Memory, Microsoft SQL Server (A)</p> Signup and view all the answers

What are analytic platforms specialized for?

<p>Analyzing large data sets (A)</p> Signup and view all the answers

What is a data lake used for?

<p>Storing raw unstructured or structured data (C)</p> Signup and view all the answers

What is a primary key in a relational database?

<p>A field that uniquely identifies each record in a table (D)</p> Signup and view all the answers

What is the purpose of a foreign key in a relational database?

<p>To look up data about the supplier of a specific part (A)</p> Signup and view all the answers

What is the function of data manipulation language in a DBMS?

<p>Adding, changing, deleting, and retrieving data (C)</p> Signup and view all the answers

What is the purpose of a data dictionary in a DBMS?

<p>To specify database structure and store definitions of data elements (B)</p> Signup and view all the answers

What is the role of SQL in a DBMS?

<p>Retrieving information from the database (A)</p> Signup and view all the answers

What are the entities represented by separate tables in a relational database?

<p>SUPPLIER and PART (D)</p> Signup and view all the answers

What is the term for individual information about a single supplier in a table?

<p>Row or record (B)</p> Signup and view all the answers

How are relational database tables combined to provide required data?

<p>Through operations: select, join, and project (D)</p> Signup and view all the answers

What is the function of a primary key in a relational database?

<p>Uniquely identifying each record in a table (B)</p> Signup and view all the answers

What is the purpose of a data dictionary in a DBMS?

<p>To specify database structure and store definitions of data elements (A)</p> Signup and view all the answers

What is the function of SQL in a DBMS?

<p>Retrieving information from the database (A)</p> Signup and view all the answers

What are the entities represented by separate tables in a relational database?

<p>SUPPLIER and PART (A)</p> Signup and view all the answers

What is the role of clustering in data mining?

<p>Identifying different groupings within data (A)</p> Signup and view all the answers

What does forecasting in data mining involve?

<p>Using existing values to predict future values (D)</p> Signup and view all the answers

What is the significance of unstructured data in text mining and web mining?

<p>It is used to extract key elements from unstructured text (C)</p> Signup and view all the answers

What is the primary focus of Chapter 12 in the context of Business Intelligence and Data Mining?

<p>BI users and reporting (B)</p> Signup and view all the answers

What is the impact of inaccurate data on businesses, according to Gartner Inc.?

<p>It can have detrimental effects on businesses (D)</p> Signup and view all the answers

What is the application of data mining in various business sectors?

<p>Analyzing customer data for business insights (C)</p> Signup and view all the answers

What is the significance of information policy in managing data as an organizational resource?

<p>It ensures proper management and utilization of data (B)</p> Signup and view all the answers

What is the need for data quality assurance in organizations?

<p>To maintain the accuracy and reliability of data (A)</p> Signup and view all the answers

How does text mining tools benefit from unstructured data?

<p>By extracting key elements from unstructured text (D)</p> Signup and view all the answers

What is the prevalence of data quality problems in large companies, as mentioned in the text?

<p>Including bad product codes and descriptions (D)</p> Signup and view all the answers

What is the focus of Caesars Entertainment's use of data mining?

<p>Analyzing customer data for business insights (D)</p> Signup and view all the answers

What is the primary use of classification in data mining?

<p>Identifying patterns and rules (B)</p> Signup and view all the answers

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Study Notes

Business Intelligence and Data Mining

  • Chapter 12 delves into BI users and reporting
  • Classification and its use in identifying patterns and rules
  • Clustering's role in discovering different groupings within data
  • Forecasting's use of existing values to predict future values
  • Data mining's applications in various business sectors
  • Caesars Entertainment's use of data mining to analyze customer data
  • Unstructured data's significance and its use in text mining and web mining
  • Text mining tools' ability to extract key elements from unstructured text
  • The importance of information policy in managing data as an organizational resource
  • The need for data quality assurance in organizations
  • The impact of inaccurate data on businesses, as reported by Gartner Inc.
  • The prevalence of data quality problems in large companies, including bad product codes and descriptions

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