Data and Information Basics
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Questions and Answers

What is the primary difference between data and information?

  • Data depends on information, while information doesn't depend on data
  • Information is stored in data warehouses, while data is not
  • Data is raw material without specific meaning, while information is a group of data with logical meaning (correct)
  • Data is measured in meaningful units, while information is measured in bits and bytes

    • What is the function of a data warehouse?

  • Storing consolidated data from multiple locations for analytical needs (correct)
  • Organizing data for operational needs
  • Processing data for transactional systems
  • Storing raw data for immediate retrieval

    • What does it mean for a data warehouse to be time variant?

  • The data warehouse can only be accessed at certain times
  • The data warehouse is synchronized with real-time data
  • Historical data is kept in the data warehouse (correct)
  • The data warehouse stores only current data

    • How does a data warehouse differ from a relational database?

    <p>A data warehouse is designed for analytical needs, while a relational database is not</p> Signup and view all the answers

    What does it mean for a data warehouse to be subject-oriented?

    <p>It can be used to analyze a particular subject area such as 'Sales'</p> Signup and view all the answers

    Match the following terms with their descriptions:

    <p>Data = Individual unit containing raw materials Information = Group of data carrying logical meaning Data warehouse = Relational database designed for analytical needs OLAP = Functioning basis of a data warehouse</p> Signup and view all the answers

    Match the following characteristics with their definitions:

    <p>Subject-oriented = Used to analyze a particular subject area Integrated = Integrates data from multiple sources Time Variant = Keeps historical data Non-volatile = Supports management's decision-making process</p> Signup and view all the answers

    Match the following terms with their meanings:

    <p>Data warehousing = Organizing &amp; storing data for efficient retrieval Bits and bytes = Measurement of data Meaningful units = Measurement of information OLAP = Online Analytical Processing</p> Signup and view all the answers

    Match the following statements with their correct definitions:

    <p>Data and Information = Relationship where information depends on data Data Warehouse Characteristics = Subject-oriented, integrated, time variant and non-volatile collection of data Data Warehouse Process = Act of transforming data into information Information Measurement = Measured in meaningful units like time, quantity, etc.</p> Signup and view all the answers

    Match the following terms with their primary usage:

    <p>Bits and bytes = Measurement of data Data warehousing = Efficient and insightful retrieval of stored data OLAP = Online Analytical Processing Non-volatile = Collection of data in support of management’s decision making process</p> Signup and view all the answers

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