Master the Art of Database Design
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Master the Art of Database Design

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Questions and Answers

Which of the following is a disadvantage of database systems?

  • Enhanced security
  • Improved performance
  • Increased costs (correct)
  • Simplified management

    • Which job title involves analyzing large amounts of varied data to generate insights and relationships?

  • Database Security Officer
  • Data Scientist (correct)
  • Database Developer
  • Database Consultant

    • What is the purpose of a Database Designer?

  • Implement security policies for data administration
  • Design and implement the infrastructure for cloud database systems
  • Create and maintain database-based applications
  • Define the structure of a database (correct)

    • What are databases classified according to?

    <p>Number of users</p> Signup and view all the answers

    What were DBMSs developed for?

    <p>To enhance file system data management</p> Signup and view all the answers

    What is the role of a Database Administrator?

    <p>Manage and maintain DBMS and databases</p> Signup and view all the answers

    Which of the following best describes the difference between data and information?

    <p>Data is unprocessed, while information consists of processed facts</p> Signup and view all the answers

    What is a database?

    <p>A specialized structure that allows computer-based systems to store, manage, and retrieve data</p> Signup and view all the answers

    Why are databases valuable assets for decision making?

    <p>They allow for the secure sharing of data</p> Signup and view all the answers

    What are the main components of a database system?

    <p>Database management system (DBMS)</p> Signup and view all the answers

    What are the main functions of a database management system (DBMS)?

    <p>Storing and managing data</p> Signup and view all the answers

    What are the characteristics of data in today's world?

    <p>Data is abundant, global, and everywhere</p> Signup and view all the answers

    Which of the following best describes a database management system (DBMS)?

    <p>A program that manages the structure and access to data stored in a database</p> Signup and view all the answers

    What is the advantage of using a DBMS?

    <p>Improved data sharing and security</p> Signup and view all the answers

    Which type of database supports one user at a time?

    <p>Single-user database</p> Signup and view all the answers

    What is a centralized database?

    <p>A database where data is located at a single site</p> Signup and view all the answers

    What type of database contains a wide variety of data used in multiple disciplines?

    <p>General-purpose database</p> Signup and view all the answers

    What is the purpose of a data warehouse?

    <p>To store data in a format optimized for decision support</p> Signup and view all the answers

    Which of the following is a possible result of uncontrolled data redundancy?

    <p>Consistent data-entry errors</p> Signup and view all the answers

    What are the three types of data anomalies that can develop when not all required changes in redundant data are made successfully?

    <p>Update anomalies, insertion anomalies, deletion anomalies</p> Signup and view all the answers

    What does a database management system (DBMS) do?

    <p>All of the above</p> Signup and view all the answers

    What is a data dictionary?

    <p>A storage facility for data elements and their relationships</p> Signup and view all the answers

    What does performance tuning in a DBMS ensure?

    <p>Efficient system performance</p> Signup and view all the answers

    What is the de facto query language and data access standard supported by the majority of DBMS vendors?

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

    Which type of file system data processing involves a system of file folders and filing cabinets?

    <p>Manual file systems</p> Signup and view all the answers

    What is the definition of a record in the context of file system data processing?

    <p>A logically connected set of one or more fields that describes a person, place, or thing</p> Signup and view all the answers

    What is the main problem with file systems that challenges the types of information that can be created from data?

    <p>Difficulty of getting quick answers</p> Signup and view all the answers

    What is the difference between structural dependence and structural independence in file system data processing?

    <p>Structural dependence refers to changes in file structure, while structural independence refers to changes in data access</p> Signup and view all the answers

    What is data dependence in file system data processing?

    <p>Data access changes when data storage characteristics change</p> Signup and view all the answers

    What is the practical significance of data dependence in file system data processing?

    <p>The difference between logical and physical format</p> Signup and view all the answers

    Which type of database stores historical data and business metrics used exclusively for tactical or strategic decision making?

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

    What is the purpose of a data warehouse?

    <p>To store data in a format optimized for decision support</p> Signup and view all the answers

    Which type of database supports multiple users at the same time?

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

    What is the role of a database management system (DBMS)?

    <p>To store and manage data</p> Signup and view all the answers

    Which of the following best describes the purpose of a database design?

    <p>To explain the importance of database design</p> Signup and view all the answers

    What is the main flaw in file system data management?

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

    Which of the following best describes the difference between data and information?

    <p>Data consists of raw facts, while information is processed data that reveals meaning</p> Signup and view all the answers

    Which of the following job titles involves helping companies leverage database technologies to improve business processes and achieve specific goals?

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

    Which of the following is a limitation of file system data management that led to the development of DBMSs?

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

    What is the main purpose of a Database Security Officer?

    <p>Implement security policies for data administration</p> Signup and view all the answers

    What does database design define?

    <p>The database structure</p> Signup and view all the answers

    Which of the following is a possible result of uncontrolled data redundancy?

    <p>Data integrity problems</p> Signup and view all the answers

    What are the main functions of a database management system (DBMS)?

    <p>Data backup and recovery management</p> Signup and view all the answers

    What is the purpose of a data warehouse?

    <p>To support decision making</p> Signup and view all the answers

    What is the de facto query language and data access standard supported by the majority of DBMS vendors?

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

    Which of the following best describes a well-designed database?

    <p>Facilitates data management and generates accurate and valuable information</p> Signup and view all the answers

    What is a field in the context of file system data processing?

    <p>A character or group of characters that has a specific meaning and is used to define and store data</p> Signup and view all the answers

    What are the main problems with file system data processing?

    <p>Lengthy development times, difficulty of getting quick answers, complex system administration, lack of security and limited data sharing</p> Signup and view all the answers

    What is the difference between structural dependence and structural independence in file system data processing?

    <p>Structural dependence means access to a file is dependent on its own structure, while structural independence means the file structure can be changed without affecting the application's ability to access the data</p> Signup and view all the answers

    Which of the following job titles involves designing and implementing the infrastructure for next-generation cloud database systems?

    <p>Cloud Computing Data Architect</p> Signup and view all the answers

    Which of the following skills is NOT required for a Database Consultant?

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

    Which of the following is NOT a disadvantage of database systems?

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

    Which of the following best describes the purpose of a Database Designer?

    <p>Design and maintain databases</p> Signup and view all the answers

    Which of the following best describes the difference between data and information?

    <p>Data is raw facts, while information is processed data</p> Signup and view all the answers

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