Database Systems and Predictive Analytics Quiz
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Questions and Answers

Which technology delivers information from various data sources, including big data sources, in real-time and near-real time?

  • Data preparation
  • Distributed file stores
  • Data integration
  • Data virtualization (correct)
  • What is the primary function of data integration tools across solutions such as Amazon EMR, Apache Hive, and Hadoop?

  • Data virtualization
  • Data orchestration (correct)
  • Data cleansing and enrichment
  • Data storage and retrieval
  • What does data preparation software aim to do for diverse and messy data sets?

  • Encrypt the data for security
  • Aggregate the data into a single source
  • Store the data in a distributed file store
  • Ease the burden of sourcing, shaping, and cleansing the data (correct)
  • Which products conduct data cleansing and enrichment on large, high-velocity data sets using parallel operations on distributed data stores and databases?

    <p>Data quality products</p> Signup and view all the answers

    What is the primary purpose of predictive analytics?

    <p>To discover, evaluate, optimize, and deploy predictive models by analyzing big data sources to improve business performance or mitigate risk.</p> Signup and view all the answers

    Which type of databases include key-value, document, and graph databases?

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

    What is the primary function of stream analytics software?

    <p>Filter, aggregate, enrich, and analyze a high throughput of data from multiple disparate live data sources.</p> Signup and view all the answers

    What is the main function of in-memory data fabric?

    <p>Provides low-latency access and processing of large quantities of data by distributing data across the dynamic random access memory (DRAM), Flash, or SSD of a distributed computer system.</p> Signup and view all the answers

    What is the purpose of the relational data model and SQL?

    <p>To define the structure of data and ensure its integrity using constraints like primary keys, foreign keys, and unique constraints.</p> Signup and view all the answers

    What is the primary purpose of a relational database management system (RDBMS)?

    <p>Storing data in a tabular format</p> Signup and view all the answers

    In the context of relational databases, what is the significance of Codd's 12 rules?

    <p>Defining the characteristics of a relational database system</p> Signup and view all the answers

    What was the purpose of IBM's System R project initiated in 1974?

    <p>Developing a prototype RDBMS</p> Signup and view all the answers

    What was the significance of Multics Relational Data Store, introduced in June 1976?

    <p>First commercial RDBMS available for purchase</p> Signup and view all the answers

    Which language is commonly used for querying and updating relational databases?

    <p>SQL (Structured Query Language)</p> Signup and view all the answers

    Which of the following is NOT an example of an RDBMS?

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

    What is the unique key identifying each row in a table called?

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

    Which organization developed the first RDBMS relatively faithful to the relational model?

    <p>IBM UK Scientific Centre at Peterlee</p> Signup and view all the answers

    What does a truly-relational database management system (TRDBMS) implement according to strict adherents to Codd's principles?

    <p>All of Codd's 12 rules</p> Signup and view all the answers

    What concept was demonstrated by Codd to represent data relationships of arbitrary complexity?

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

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