Quick Answer
The correct answer is a violation of business rules. This is because the data contains future order dates, which directly contradicts a logical constraint that an order date must be in the past or present—a classic example of a data quality business rule violation. In the CompTIA Data+ DA0-001 exam, this scenario tests your ability to distinguish between data integrity issues like rule violations versus format or consistency errors. A common trap is confusing this with a data type issue, but the problem here is not the format of the date; it is that the value itself breaks a domain-specific rule, such as `order_date <= CURRENT_DATE`. To remember this, think of business rules as the “if-then” logic of your data: if a date is in the future for an order, it breaks the rule, not the type. Memory tip: “Future dates break the rule, not the tool.”
This DA0-001 practice question tests your understanding of mining and acquiring data. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A data analyst is pulling data from a production database for a report. The database contains customer orders with a column 'order_date'. The analyst notices that some orders have dates in the future. Which data quality issue does this represent?
Invalid data type
Why wrong: The data type is likely date; the issue is with the value itself.
Inconsistent data
Why wrong: Inconsistency would be different formats or values across sources, not a single column with implausible values.
Missing data
Why wrong: Missing data would be null values, not future dates.
Violation of business rules
Future orders are not valid per business rules, indicating a data quality issue.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Violation of business rules
Option D is correct because future order dates violate a business rule that order_date must be in the past or present. This is a classic data integrity issue where the data does not conform to domain-specific constraints, such as 'order_date <= CURRENT_DATE'. The analyst should flag this as a violation of business rules, not a data type or consistency problem.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Invalid data type
Why it's wrong here
The data type is likely date; the issue is with the value itself.
Inconsistent data
Why it's wrong here
Inconsistency would be different formats or values across sources, not a single column with implausible values.
Missing data
Why it's wrong here
Missing data would be null values, not future dates.
Violation of business rules
Why this is correct
Future orders are not valid per business rules, indicating a data quality issue.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates confuse 'invalid data type' (Option A) with 'invalid data value' — the data is of the correct type but violates a logical business rule, which is a distinct quality issue often tested in DA0-001.
Detailed technical explanation
Under the hood, databases enforce constraints like CHECK (order_date <= CURRENT_DATE) to prevent such violations at the schema level. In a production environment, future dates might arise from application bugs, time zone misconfigurations, or manual data entry errors. Real-world scenarios include order systems that incorrectly record future timestamps due to client-side clock skew or batch processing delays.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the DA0-001 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
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FAQ
Mining and Acquiring Data — This question tests Mining and Acquiring Data — Read the scenario before looking for a memorised answer..
The correct answer is: Violation of business rules — Option D is correct because future order dates violate a business rule that order_date must be in the past or present. This is a classic data integrity issue where the data does not conform to domain-specific constraints, such as 'order_date <= CURRENT_DATE'. The analyst should flag this as a violation of business rules, not a data type or consistency problem.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This DA0-001 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 DA0-001 exam.
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