Systems Development Life Cycle (SDLC) Quiz
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Questions and Answers

What do ERD symbols in a system model represent?

  • Technology used in the system
  • Existence of entity instances
  • Business rules that must be followed (correct)
  • System implementation details

    • In an ERD, when can one instance of an entity be related to many instances of another entity?

  • When one entity can create multiple instances of the other (correct)
  • When each entity must exist for the other to exist
  • When each entity has the same components
  • When the existence of an entity instance is optional for another entity instance

    • What does the Physical Process Model explain about a system?

  • Specific technology used in the system
  • Human interactions with the system
  • Constraints and rules of the system
  • Implementation details and system operation (correct)

    • How should processes be decomposed in a system model?

    <p>Until each process is primitive and single-purpose</p> Signup and view all the answers

    In an ERD, when is the existence of an entity instance optional for a related entity instance?

    <p>When a customer may not be included in any orders</p> Signup and view all the answers

    What do business rules represent in a system model?

    <p>Constraints followed during system operation</p> Signup and view all the answers

    What do ERD symbols show about entities in a system model?

    <p>Optional existence of entity instances</p> Signup and view all the answers

    Why is it important to decompose processes in a system model?

    <p>To have single-purpose, primitive processes</p> Signup and view all the answers

    Which of the following is NOT a component of the Physical Process Model?

    <p>The logical data flow diagram (DFD)</p> Signup and view all the answers

    In an ERD, what do the symbols represent regarding business rules?

    <p>Constraints that must be followed when the system is operational</p> Signup and view all the answers

    What does the process of decomposition involve in system modeling?

    <p>Breaking down processes into smaller, single-purpose processes</p> Signup and view all the answers

    In an ERD, what can the symbols show about the relationship between entity instances?

    <p>Whether one entity instance must exist for another to exist</p> Signup and view all the answers

    What is the purpose of the Physical Process Model in system modeling?

    <p>To explain the implementation details and how the system will work</p> Signup and view all the answers

    In an ERD, what can the symbols represent regarding the cardinality of entity relationships?

    <p>Whether one entity instance can be related to one or many instances of another entity</p> Signup and view all the answers

    Which of the following is a characteristic of the Physical Process Model?

    <p>It follows the same rules pertaining to balance and decomposition as the logical DFD</p> Signup and view all the answers

    In an ERD, what can the symbols show about the optionality of entity relationships?

    <p>Whether the existence of an entity instance is optional for a related entity instance</p> Signup and view all the answers

    Which of the following is NOT a component of the Physical Process Model?

    <p>The logical data flow diagram (DFD)</p> Signup and view all the answers

    What is the purpose of decomposing processes in system modeling?

    <p>To break down processes into smaller, single-purpose processes</p> Signup and view all the answers

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