Database Concepts Quiz
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Questions and Answers

What is the primary purpose of Normalization in SQL?

  • Ensure data is stored logically (correct)
  • Store data illogically
  • Cause Insertion Anomalies
  • Increase data redundancy
  • Which stage of relational databases design involves importing and converting data from the old system into the new database?

  • Normalization
  • ER Modeling
  • Data conversion (correct)
  • Testing
  • What is the purpose of ER Modeling in database design?

  • Store data illogically
  • Reduce data redundancy
  • Define data elements and relationships (correct)
  • Cause Deletion Anomalies
  • Which database element serves as the primary unit of organization and storage of data?

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

    What is the objective of testing in the implementation stage of relational databases design?

    <p>Check the database against requirement specifications</p> Signup and view all the answers

    What does Normalization in SQL aim to eliminate?

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

    What is the recommended approach before sketching out tables and columns for a database project?

    <p>Wait and gather information</p> Signup and view all the answers

    What is a database requirement?

    <p>Attributes the database must contain to store necessary information</p> Signup and view all the answers

    What is the purpose of work shadowing in the context of a database project?

    <p>Observing the flow of information</p> Signup and view all the answers

    In a database, what are data requirements primarily focused on?

    <p>Attributes necessary for storing information</p> Signup and view all the answers

    What is the primary purpose of initial interviews with chief stakeholders in a database project?

    <p>To understand customer needs and project initiation</p> Signup and view all the answers

    What do most databases need to generate, according to the text?

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

    What is the purpose of the planning stage in the database development life cycle?

    <p>To take into consideration the Information Systems strategy of the organization</p> Signup and view all the answers

    Which stage of the database design process involves implementing the logical model of a database?

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

    Why is it important for a database system to go through a development life cycle?

    <p>To optimize performance and high-quality design</p> Signup and view all the answers

    What distinguishes the logical model stage from the physical model stage in database design?

    <p>Logical model is concerned with developing a database model without physical implementation</p> Signup and view all the answers

    In the context of database design, what does the system definition stage primarily focus on?

    <p>Defining the scope and boundaries of the proposed system</p> Signup and view all the answers

    Why might the steps in the development life cycle not have to be followed religiously on small database systems?

    <p>Because small systems are typically simple and may not need all stages</p> Signup and view all the answers

    What is the primary function of a column in a database?

    <p>Store related records of a table</p> Signup and view all the answers

    In a database schema, what does the conceptual model primarily focus on?

    <p>Organizational and physical structures</p> Signup and view all the answers

    Which database model distinguishes between the hardware's specifications and the OS initiated by the database?

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

    What is the purpose of an external model in a database schema?

    <p>Provide application interface</p> Signup and view all the answers

    Which element in a database schema gives access to just a single owner who can modify objects within it?

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

    What does each column in a table have that determines the type of data it can store?

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

    What is the purpose of a primary key in a database?

    <p>Ensure uniqueness of each row</p> Signup and view all the answers

    In a relational database, what kind of relationship is established between tables using primary and foreign keys?

    <p>Parent-Child Relationship</p> Signup and view all the answers

    Which type of relationship in a database links one table record to more than one record from another table?

    <p>One-to-Many Relationship</p> Signup and view all the answers

    What role does a foreign key play in database design?

    <p>Creating links between tables</p> Signup and view all the answers

    Which type of relationship involves many records from one table being linked to many records in another table?

    <p>Many-to-Many Relationship</p> Signup and view all the answers

    What is the primary purpose of using primary and foreign keys in a relational database?

    <p>Establishing relationships between tables</p> Signup and view all the answers

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