What does 'updating a database' usually mean in day-to-day operations?
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AReorganizing the database storage physically
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BRevising or redesigning the file/table structure (schema change)
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CModifying existing records or adding new record occurrences (routine DML)
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DAll of the above
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ENone of the above
Answer
Correct Answer: Modifying existing records or adding new record occurrences (routine DML)
Explanation
Introduction / Context:Terminology matters in data operations. ‘‘Updating a database’’ in everyday practice usually refers to changing the stored data values—adding new rows and editing or deleting existing rows—not reorganizing files or altering the schema.
Given Data / Assumptions:
- Operations are routine, periodic, and content-focused.
- No physical storage reorganization is implied.
- No schema redesign is requested.
Concept / Approach:Data Manipulation Language (DML) covers INSERT, UPDATE, and DELETE. These change record occurrences and values. By contrast, physical reorganization is a performance/maintenance task, and schema revision is a DDL change. Therefore, ‘‘updating’’ maps to modifying or adding record occurrences.
Step-by-Step Solution:
Distinguish DML (content) from DDL (structure) and admin tasks (reorg).Identify day-to-day ‘‘update’’ work as data edits and inserts.Choose the option that explicitly states modifying or adding records.Verification / Alternative check:Job logs and audit trails label content changes as updates, inserts, and deletes; structural changes are tracked separately as migrations.
Why Other Options Are Wrong:
- Reorganization: storage-level task, not an ‘‘update’’ in the everyday sense.
- Schema revision: structural, not content change.
- All of the above: incorrect because only the DML-focused definition matches routine updating.
Common Pitfalls:Using ‘‘update’’ ambiguously; always separate content edits from structural or physical maintenance activities.
Final Answer:Modifying existing records or adding new record occurrences (routine DML)