IM101 Advanced Database Week 2 Review: Entity Relationship Diagram & Attribute Types
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Questions and Answers

What is the distinguishing characteristic of an entity in an Entity Relationship Diagram?

  • Multi-valued Attribute
  • Composite Attribute
  • Derived Attribute
  • Key Attribute (correct)

    • Which type of attribute can be divided into smaller subparts representing more basic attributes?

  • Optional Attribute
  • Single-Valued Attribute
  • Derived Attribute
  • Composite Attribute (correct)

    • Which attribute is calculated (derived) from other attributes and does not need to be physically stored in the database?

  • Multi-valued Attribute
  • Key Attribute
  • Required Attribute
  • Derived Attribute (correct)

    • What type of attribute can have more than one value associated with it?

    <p>Multi-valued Attribute</p> Signup and view all the answers

    What is an attribute in an Entity Relationship Diagram?

    <p>Particular properties that describe entities</p> Signup and view all the answers

    Which type of attribute describes an entity with a physical existence?

    <p>Simple attribute</p> Signup and view all the answers

    In an Entity Relationship Diagram, what is a derived attribute?

    <p>An attribute that can be calculated using other attributes</p> Signup and view all the answers

    What is the purpose of a composite attribute in an Entity Relationship Diagram?

    <p>To group multiple attributes into one larger unit</p> Signup and view all the answers

    In an entity relationship diagram, what does an ENTITY represent?

    <p>A person, place, thing, or event about which data will be collected and stored</p> Signup and view all the answers

    What is a DERIVED ATTRIBUTE in the context of data modeling?

    <p>A characteristic of an entity that can be calculated using other attributes</p> Signup and view all the answers

    Which term describes a key attribute that is composed of multiple other attributes in a database?

    <p>Composite attribute</p> Signup and view all the answers

    What does an ATTRIBUTE represent in the context of data modeling?

    <p>A characteristic of an entity about which data is stored</p> Signup and view all the answers

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