DS0-001 · Question #69
Which of the following best describes a collection of data that shares the same properties or attributes?
The correct answer is C. Entity set. Entity set (C) is correct because in database and ER modeling terminology, an entity set is a collection of entities of the same type - meaning they all share the same attributes or properties (e.g., all "Student" entities have StudentID, Name, and Age). A (Relation set) is not s
Question
Which of the following best describes a collection of data that shares the same properties or attributes?
Options
- ARelation set
- BER model
- CEntity set
- DTuples
How the community answered
(14 responses)- B7% (1)
- C86% (12)
- D7% (1)
Explanation
Entity set (C) is correct because in database and ER modeling terminology, an entity set is a collection of entities of the same type - meaning they all share the same attributes or properties (e.g., all "Student" entities have StudentID, Name, and Age).
- A (Relation set) is not standard terminology; a relation in relational databases refers to a table, not a grouping of similar entities by shared attributes.
- B (ER model) is the overall modeling framework used to design a database schema - it's the whole diagram, not a collection of similar data.
- D (Tuples) are individual rows/records within a relation, representing a single entity instance, not a collection of entities sharing properties.
Memory tip: Think of an entity set like a class in object-oriented programming - just as a class defines shared attributes for all its objects, an entity set groups all entities that share the same structure.
Topics
Community Discussion
No community discussion yet for this question.