Use of a supertype/subtype relationship is necessary when which of the following exists?(a) An instance of a subtype participates in a relationship that is unique to that subtype(b) An instance of a subtype participates in a relationship that is the same as the other subtypes(c) Attributes apply to all of the instances of an entity type(d) No attributes apply to any of the instances of an entity typeI got this question in my homework.My doubt is from The Atomic Data Models and Business Models topic in division Planning Oracle Applications of Oracle

Use of a supertype/subtype relationship is necessary when which of the

1.	Use of a supertype/subtype relationship is necessary when which of the following exists?(a) An instance of a subtype participates in a relationship that is unique to that subtype(b) An instance of a subtype participates in a relationship that is the same as the other subtypes(c) Attributes apply to all of the instances of an entity type(d) No attributes apply to any of the instances of an entity typeI got this question in my homework.My doubt is from The Atomic Data Models and Business Models topic in division Planning Oracle Applications of Oracle
Answer» <html><body><p>Right answer is (a) An <a href="https://interviewquestions.tuteehub.com/tag/instance-25561" style="font-weight:bold;" target="_blank" title="Click to know more about INSTANCE">INSTANCE</a> of a <a href="https://interviewquestions.tuteehub.com/tag/subtype-1231813" style="font-weight:bold;" target="_blank" title="Click to know more about SUBTYPE">SUBTYPE</a> participates in a relationship that is unique to that subtype<br/><br/>The explanation: Super-types and sub-types show <a href="https://interviewquestions.tuteehub.com/tag/hierarchy-1020132" style="font-weight:bold;" target="_blank" title="Click to know more about HIERARCHY">HIERARCHY</a> in the structure; graphs and <a href="https://interviewquestions.tuteehub.com/tag/trees-1427074" style="font-weight:bold;" target="_blank" title="Click to know more about TREES">TREES</a> show hierarchy in the data.</p></body></html>

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