More Questions from Database Systems

Within a file or table, which item is defined as the collection of fields that together describe one entity (for example, one customer, one order, or one product)?

Computer Science Database Systems Difficulty: Easy
Choose an option
  • A
    Record
  • B
    File
  • C
    Field
  • D
    Document
  • E
    None of the above

Answer

Correct Answer: Record

Explanation

Introduction / Context:Data modeling layers range from fields to records to files/tables and then to databases. Recognizing the role of each helps you design schemas and understand how applications store and retrieve business entities like customers or orders.

Given Data / Assumptions:

  • A field is the smallest named data element (e.g., last_name).
  • A record groups fields that describe one entity instance (e.g., one customer).
  • A file/table stores many records of the same type.

Concept / Approach:A record (row/tuple) is a set of fields that collectively represent an instance of an entity. This is the standard terminology across hierarchical, network, and relational perspectives, even though specific labels (tuple/row) may differ in relational theory.

Step-by-Step Solution:

Identify the unit that aggregates multiple fields. Relate it to a single entity instance. Select “Record.” Rule out broader or narrower constructs.

Verification / Alternative check:Any relational table shows the pattern: columns are fields; each row is a record describing a single entity instance.

Why Other Options Are Wrong:

  • File: stores many records; too broad.
  • Field: atomic attribute; too narrow.
  • Document: not a standard database modeling primitive in classic relational terms.
  • None: invalid because “Record” is correct.

Common Pitfalls:Confusing a file/table with a record, or a field with a record.

Final Answer:Record

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