DS0-001 · Question #69
DS0-001 Question #69: Real Exam Question with Answer & Explanation
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
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.
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