DA0-002 Data Acquisition and Preparation Practice Question
A company receives daily sales data in CSV format. The data includes a 'Date' column in MM/DD/YYYY format. To load this into a database that expects YYYY-MM-DD, the analyst should:
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use a data transformation tool to convert the date format during ETL
(use a data transformation tool) is the standard practice during ETL to convert date formats programmatically. Option A (manually edit) is inefficient and error-prone. Option B (change schema) would require altering the database and may cause compatibility issues. Option C (ignore) loses data integrity.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Manually edit the CSV files before loading
Why it's wrong here
Manual editing is not scalable and introduces risk of errors.
- ✗
Change the database schema to accept MM/DD/YYYY
Why it's wrong here
Changing schema may not be feasible and could break other processes.
- ✗
Ignore the date column and use a default date
Why it's wrong here
Ignoring the date column leads to data loss and inaccurate analysis.
- ✓
Use a data transformation tool to convert the date format during ETL
Why this is correct
Transformation tools automate the conversion and ensure consistency.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DA0-002 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DA0-002 exam.