In the logical organization of data, a group of related fields is combined to form which higher-level structure used to represent one instance of an entity?
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Adata file
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Bdata record
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Cmenu
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Dbank
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ENone of the above
Answer
Correct Answer: data record
Explanation
Introduction / Context:Understanding the building blocks of data organization helps you design, normalize, and query databases effectively. This question asks you to identify the next level up from “field” when representing a single business object like a customer or an order line.
Given Data / Assumptions:
- A field is a single attribute (e.g., price, quantity).
- Related fields are grouped to represent one entity instance.
- Files/tables store multiple such instances.
Concept / Approach:A data record (row) is the standard unit that aggregates fields to describe one entity instance. A data file (or table) is a collection of many records. “Menu” and “bank” are unrelated to the data modeling hierarchy in this context.
Step-by-Step Solution:
Start from fields (atomic attributes). Group fields into a record (one instance). Recognize that many records form a file/table. Select “data record.”Verification / Alternative check:Any relational table schema demonstrates this hierarchy: columns→row→table→database.
Why Other Options Are Wrong:
- Data file: too broad; holds many records.
- Menu/Bank: not modeling primitives.
- None: incorrect because “data record” is correct.
Common Pitfalls:Confusing record with file; overlooking that records are the immediate aggregation of fields.
Final Answer:data record