The answer is to use setWorkflow(false) and setAutoSysFields(false) before updating each record. This is the most efficient approach because disabling workflow prevents business rules, scripts, and notifications from firing on each update, while disabling auto system fields stops ServiceNow from recalculating fields like sys_updated_on and sys_updated_by, dramatically reducing database overhead and processing time. On the ServiceNow Certified Application Developer CAD exam, this question tests your understanding of GlideRecord performance optimization, often appearing as a trap where candidates mistakenly choose batch processing or setLimit, not realizing that even batch updates trigger unnecessary system processing if workflows remain enabled. The key memory tip is “WF off, fields static” — when doing bulk updates, always turn off workflow and auto system fields to keep the engine light.
SNOW-CAD Working with Data Practice Question
This SNOW-CAD practice question tests your understanding of working with data. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 developer has a GlideRecord query that retrieves 10,000 records. They need to perform an update on each record. Which approach is most efficient to avoid performance issues?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use setWorkflow(false) and setAutoSysFields(false) before updating each record.
Option A is correct because using setWorkflow(false) and setAutoSysFields(false) reduces system processing. Option B is wrong because using multiple queries increases load. Option C is wrong because batch mode without disabling workflow still runs business rules. Option D is wrong because setLimit restricts the number of records, which may miss updates.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Use GlideRecord's batch mode without any modifications.
Why it's wrong here
Batch mode still runs business rules unless disabled.
✓
Use setWorkflow(false) and setAutoSysFields(false) before updating each record.
Why this is correct
Disabling workflow and auto sys fields reduces overhead.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use multiple GlideRecord queries to process records in batches.
Why it's wrong here
Multiple queries can increase database load.
✗
Use setLimit(100) and run the script multiple times.
Why it's wrong here
Limiting the query may not update all records.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the SNOW-CAD 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
Got this wrong? Here's your next step.
Identify which SNOW-CAD exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Working with Data — This question tests Working with Data — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use setWorkflow(false) and setAutoSysFields(false) before updating each record. — Option A is correct because using setWorkflow(false) and setAutoSysFields(false) reduces system processing. Option B is wrong because using multiple queries increases load. Option C is wrong because batch mode without disabling workflow still runs business rules. Option D is wrong because setLimit restricts the number of records, which may miss updates.
What should I do if I get this SNOW-CAD question wrong?
Identify which SNOW-CAD exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A developer needs to update a large number of records in the 'incident' table based on a specific condition. Which approach should be used to minimize performance impact?
easy
✓ A.Use GlideRecord with setWorkflow(false) and setEngine(false) to update records in a loop.
B.Use GlideAggregate to perform the update.
C.Use an export set to update records in bulk.
D.Use the updateMultiple method on a GlideRecord object.
Why A: Option A is correct because using GlideRecord in combination with setWorkflow(false) and setEngine(false) prevents unnecessary business rules and workflow execution, reducing overhead. Option B is wrong because GlideAggregate is for aggregation, not updates. Option C is wrong because updateMultiple can be more efficient but still triggers business rules if not disabled. Option D is wrong because export set is not meant for updates.
Last reviewed: Jun 24, 2026
Question Discussion
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This SNOW-CAD practice question is part of Courseiva's free ServiceNow 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 SNOW-CAD exam.
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