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</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</p> Signup and view all the answers

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

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

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

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

    What do data warehouses store for decision makers?

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

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

    <p>Blockchain</p> Signup and view all the answers

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

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

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

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

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

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

    What is one of the key features of Hadoop?

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

    Which database provides rapid access to data stored on HDFS?

    <p>HBase</p> Signup and view all the answers

    What type of data can Hadoop process?

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

    How does Hadoop run?

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

    What is a common use of Hadoop in companies?

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

    What is the main advantage of in-memory computing?

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

    What are analytic platforms specialized for?

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

    What is a data lake used for?

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

    What is the role of SQL in a DBMS?

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

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

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

    How are relational database tables combined to provide required data?

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

    What is the function of SQL in a DBMS?

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

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

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

    What is the role of clustering in data mining?

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

    What does forecasting in data mining involve?

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

    How does text mining tools benefit from unstructured data?

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

    What is the primary use of classification in data mining?

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

    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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    Description

    Test your knowledge with this quiz covering topics such as BI users, reporting, classification, clustering, forecasting, data mining applications, text mining, information policy, and data quality assurance.

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