The correct condition is `current.operation() in ['insert','update']`. This works because the `in` operator evaluates whether the string returned by `current.operation()` matches any element within the list, making it the most concise and idiomatic way to handle a business rule condition for multiple operations in ServiceNow. On the ServiceNow Certified Application Developer (CAD) exam, this pattern tests your understanding of GlideRecord’s `operation()` method and the power of Python-style `in` comparisons in JavaScript. A common trap is using `||` (OR) with separate equality checks, which is unnecessarily verbose and error-prone. Remember the memory tip: “Think of the list as a guest list—if your operation’s name is on it, you’re in.”
SNOW-CAD Practice Question: Automating application logic with business rules and scripts
This SNOW-CAD practice question tests your understanding of automating application logic with business rules and scripts. 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 is creating a business rule that should run after a record is inserted or updated. The script should fire on both insert and update. Which condition should be used?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
current.operation() in ['insert','update']
Option C is correct because the `in` operator checks if `current.operation()` matches any value in the list `['insert','update']`, which is the exact requirement for a business rule that should fire on both insert and update. This is the most concise and idiomatic way in ServiceNow to test for multiple operation types.
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.
✗
current.operation().indexOf('insert') != -1
Why it's wrong here
This does not correctly check for both operations.
This works but is less readable than using the 'in' operator.
✓
current.operation() in ['insert','update']
Why this is correct
This is the recommended way to check multiple operations.
Related concept
Read the scenario before looking for a memorised answer.
✗
current.operation() in ['insert','update','delete']
Why it's wrong here
This includes delete, which is not required.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often choose Option B because it explicitly lists both conditions, not realizing that the `in` operator is the preferred and more concise syntax in ServiceNow, or they pick Option D because they forget to exclude 'delete' from the list.
Detailed technical explanation
How to think about this question
The `current.operation()` method returns a string like 'insert', 'update', 'delete', or 'query' depending on the database operation being performed. The `in` operator in ServiceNow's GlideRecord scripting is syntactic sugar that internally iterates through the array and performs equality checks, making it both efficient and readable. A real-world scenario is a business rule that sets a 'last_updated_by' field on insert and update but must not run on delete to avoid unnecessary writes or errors.
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.
TExam Day Tips
→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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Automating application logic with business rules and scripts — This question tests Automating application logic with business rules and scripts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: current.operation() in ['insert','update'] — Option C is correct because the `in` operator checks if `current.operation()` matches any value in the list `['insert','update']`, which is the exact requirement for a business rule that should fire on both insert and update. This is the most concise and idiomatic way in ServiceNow to test for multiple operation types.
What should I do if I get this SNOW-CAD question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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