interview

 

---

✅ What is GlideRecord?

GlideRecord is a JavaScript API used in ServiceNow to interact with tables in the database—like reading, creating, updating, or deleting records.

---

🪜 Basic GlideRecord Steps (With Explanation and Examples)

Step No.	Step	Purpose	Example Code
1️⃣	Create a GlideRecord Object	Initialize GlideRecord on a table.	var gr = new GlideRecord('incident');
2️⃣	Add Conditions (Filters)	Filter the records like in a query.	gr.addQuery('priority', 1); gr.addQuery('state', 'New');
3️⃣	Query the Table	Run the query to fetch records.	gr.query();
4️⃣	Loop Through Results	Iterate through each matched record.	while(gr.next()) { gs.info(gr.number); }
5️⃣	Read or Manipulate Data	Get or update field values.	gr.short_description = "Updated by script";
6️⃣	Update or Insert Record	Save changes to the database.	gr.update(); gr.insert();
7️⃣	Delete (optional)	Delete a record if needed.	gr.deleteRecord();

---

✅ Example: Update All High Priority Incidents

javascript
var gr = new GlideRecord('incident');
gr.addQuery('priority', 1); // High priority
gr.query();

while (gr.next()) {
  gr.short_description = "This was updated via GlideRecord";
  gr.update(); // Save change
}

---

✅ Common GlideRecord Methods

Method	Use
addQuery(field, value)	Add a query filter
addEncodedQuery(query)	Add a complex encoded query
get(record_sys_id)	Get a single record by sys_id
next()	Move to the next record in the result
insert()	Create a new record
update()	Save changes to current record
deleteRecord()	Delete the current record

---

🧠 Pro Tip:

• Use GlideRecord scripts in Background Scripts, Business Rules, or Script Includes.

• Always test in a development instance before running on production.

---

Would you like:

• 🔁 GlideRecord for insert/update/delete?

• 🧪 GlideRecord in async scripts (like GlideAjax)?

• 📜 GlideRecord with JOIN (addJoin)?

Let me know and I’ll provide more examples for that use case.

You said:

i mean what should be written in 1 line second line third line like steps

ChatGPT said:

Ah, got it! You're asking for a step-by-step GlideRecord script format, like what exactly to write on each line — a beginner script structure.

Here’s a simple line-by-line structure you can follow when writing a basic GlideRecord script:

---

✅ GlideRecord Script Format (Line by Line)

javascript
// 1️⃣ Line 1: Initialize GlideRecord with table name
var gr = new GlideRecord('incident');

// 2️⃣ Line 2: Add query condition(s) to filter records
gr.addQuery('priority', 1); // Example: Priority = 1

// 3️⃣ Line 3: Execute the query to fetch matching records
gr.query();

// 4️⃣ Line 4: Start a loop to go through each record
while (gr.next()) {

  // 5️⃣ Line 5: Read or update field(s) inside the loop
  gr.short_description = 'Updated via script';

  // 6️⃣ Line 6: Save the updated record back to the database
  gr.update();
}

---

✅ Explanation of Each Line

Line	Code	What it Does
1	var gr = new GlideRecord('incident');	Access the "incident" table
2	gr.addQuery('priority', 1);	Filter: Get only high-priority incidents
3	gr.query();	Run the query
4	while (gr.next()) {	Start looping through results
5	gr.short_description = 'Updated via script';	Modify a field in each record
6	gr.update();	Save the changes
7	}	End of loop

---

💡 You can copy-paste this and just change:

• The table name ('incident')

• The conditions ('priority', 1)

• The field to update (short_description)

Would you like a version for:

• Creating a new record?

• Deleting records?

• Using addEncodedQuery()?

Let me know and I’ll send those line-by-line too.

You said:

giveme 10 questions answers for interview

ChatGPT said:

Here are 10 common ServiceNow GlideRecord interview questions with answers, especially useful for beginner to intermediate-level ServiceNow developer roles:

---

✅ 1. What is GlideRecord in ServiceNow?

Answer:
GlideRecord is a JavaScript class in ServiceNow used to interact with the database. It allows us to perform CRUD operations (Create, Read, Update, Delete) on ServiceNow tables using server-side scripts.

---

✅ 2. How do you retrieve all records from a table using GlideRecord?

Answer:

javascript
var gr = new GlideRecord('incident');
gr.query();
while(gr.next()) {
  gs.info(gr.number);
}

This code fetches and logs the number of each record in the incident table.

---

✅ 3. How do you filter records in GlideRecord?

Answer:
Use .addQuery():

javascript
var gr = new GlideRecord('incident');
gr.addQuery('priority', 1);
gr.query();

This retrieves incidents with priority = 1.

---

✅ 4. What’s the difference between .addQuery() and .addEncodedQuery()?

Answer:

• addQuery() is used to add individual filter conditions.

• addEncodedQuery() takes a single string with complex or multiple conditions (like you see in filter navigator).

Example:

javascript
gr.addEncodedQuery('priority=1^active=true');

---

✅ 5. How do you insert a new record using GlideRecord?

Answer:

javascript
var gr = new GlideRecord('incident');
gr.initialize();
gr.short_description = "Test Incident";
gr.priority = 2;
gr.insert();

---

✅ 6. How do you update a specific record using GlideRecord?

Answer:

javascript
var gr = new GlideRecord('incident');
if (gr.get('sys_id_here')) {
  gr.short_description = 'Updated description';
  gr.update();
}

---

✅ 7. How do you delete a record using GlideRecord?

Answer:

javascript
var gr = new GlideRecord('incident');
if (gr.get('sys_id_here')) {
  gr.deleteRecord();
}

---

✅ 8. What is the use of next() in GlideRecord?

Answer:
next() is used to iterate through multiple records fetched by a query. It moves the pointer to the next record.

---

✅ 9. How do you check if any record exists using GlideRecord?

Answer:

javascript
var gr = new GlideRecord('incident');
gr.addQuery('priority', 1);
gr.query();
if (gr.hasNext()) {
  gs.info("At least one record exists.");
}

---

✅ 10. How do you retrieve a single record using sys_id?

Answer:

javascript
var gr = new GlideRecord('incident');
if (gr.get('sys_id_value')) {
  gs.info(gr.short_description);
}

---

Would you like:

• 10 advanced GlideRecord questions?

• 10 questions for client-side scripting?

• Or more topics like Business Rules, Script Includes, etc.?

You said:

yes

ChatGPT said:

Great! Here's a set of 10 advanced GlideRecord interview questions with answers, especially helpful for mid-level to experienced ServiceNow developers:

---

✅ 10 Advanced GlideRecord Interview Questions and Answers

---

✅ 1. How do you perform a GlideRecord query using multiple conditions in a single line?

Answer:

javascript
var gr = new GlideRecord('incident');
gr.addQuery('priority', 1).addQuery('state', 'New');
gr.query();
while(gr.next()) {
  gs.info(gr.number);
}

You can chain addQuery() calls to add multiple conditions in one line.

---

✅ 2. How do you use addOrCondition() in GlideRecord?

Answer:

javascript
var gr = new GlideRecord('incident');
var qc = gr.addQuery('priority', 1);
qc.addOrCondition('state', 'New');
gr.query();

This fetches records where priority = 1 OR state = New.

---

✅ 3. What is the use of initialize() in GlideRecord?

Answer:
.initialize() prepares a new empty record for a table so that you can set values and insert it.

javascript
var gr = new GlideRecord('incident');
gr.initialize();
gr.short_description = 'New incident';
gr.insert();

---

✅ 4. How do you get the number of rows returned by a GlideRecord query?

Answer:

javascript
var gr = new GlideRecord('incident');
gr.query();
var count = 0;
while(gr.next()) {
  count++;
}
gs.info("Number of records: " + count);

Or use .getRowCount() after .query() (not always accurate in all scopes).

---

✅ 5. What is the difference between get() and query() in GlideRecord?

Answer:

Method	Purpose
get(sys_id)	Retrieves a single record using sys_id or unique value
query()	Retrieves multiple records based on added conditions

---

✅ 6. How do you update multiple records in one go?

Answer:

javascript
var gr = new GlideRecord('incident');
gr.addQuery('priority', 2);
gr.query();
while(gr.next()) {
  gr.state = 3;
  gr.update();
}

This updates all incidents with priority = 2 and sets their state = 3.

---

✅ 7. How do you use GlideAggregate to count records by a specific field?

Answer:

javascript
var ga = new GlideAggregate('incident');
ga.addAggregate('COUNT');
ga.groupBy('priority');
ga.query();
while(ga.next()) {
  gs.info("Priority " + ga.priority + ": " + ga.getAggregate('COUNT'));
}

GlideAggregate is a powerful class used for grouped counts and sums.

---

✅ 8. How do you join tables using GlideRecord?

Answer:

javascript
var gr = new GlideRecord('incident');
gr.addJoinQuery('sys_user', 'assigned_to', 'sys_id');
gr.query();
while(gr.next()) {
  gs.info(gr.number);
}

Joins can be used for combining data from related tables.

---

✅ 9. How do you log all fields and values of a record?

Answer:

javascript
var gr = new GlideRecord('incident');
gr.query();
if(gr.next()) {
  var fields = gr.getFields();
  for (var i = 0; i < fields.size(); i++) {
    var field = fields.get(i);
    gs.info(field.getName() + ": " + gr.getValue(field.getName()));
  }
}

---

✅ 10. How do you use GlideRecord in a Script Include and return data?

Answer:

javascript
var GetIncidents = Class.create();
GetIncidents.prototype = {
  initialize: function() {},

  getHighPriority: function() {
    var gr = new GlideRecord('incident');
    gr.addQuery('priority', 1);
    gr.query();
    var result = [];
    while(gr.next()) {
      result.push(gr.getValue('number'));
    }
    return result;
  },

  type: 'GetIncidents'
};

---

Would you like the next set of:

• 🔄 Client-side scripting (g_form, g_user, etc.) questions?

• 📚 Business Rules / Script Includes / Flow Designer questions?

• 🧠 A full mock interview for ServiceNow developer?

Let me know and I’ll tailor it accordingly!

You said:

yes

ChatGPT said:

Perfect! Here's a set of 10 Client-Side Scripting Interview Questions with Answers (focused on g_form, g_user, and related client-side APIs), followed by an optional mock interview structure suggestion:

---

✅ 10 Client-Side Scripting Questions & Answers for ServiceNow

---

✅ 1. What is g_form in ServiceNow?

Answer:
g_form is a global client-side JavaScript object used to manipulate form fields on a ServiceNow form. It is available in client scripts (onLoad, onChange, onSubmit).

---

✅ 2. How do you make a field read-only using g_form?

Answer:

javascript
g_form.setReadOnly('short_description', true);

This makes the short_description field read-only on the form.

---

✅ 3. How do you hide a field on the form?

Answer:

javascript
g_form.setDisplay('priority', false);

This hides the priority field.

---

✅ 4. How do you set a value on a field using g_form?

Answer:

javascript
g_form.setValue('category', 'software');

Sets the category field to “software”.

---

✅ 5. How do you get the current value of a field?

Answer:

javascript
var val = g_form.getValue('state');

Gets the value (not label) of the state field.

---

✅ 6. What is g_user in ServiceNow?

Answer:
g_user is a client-side object that provides access to information about the currently logged-in user (only in UI Policies & Catalog Client Scripts).

Example:

javascript
g_user.userID // gets sys_id
g_user.hasRole('admin') // true/false

---

✅ 7. How do you show a mandatory field dynamically using g_form?

Answer:

javascript
g_form.setMandatory('assignment_group', true);

---

✅ 8. When is an onLoad client script used?

Answer:
It runs when a form loads, and is used to prepopulate fields, hide/show fields, or apply conditions before the user interacts.

---

✅ 9. How do you prevent a form from being submitted in onSubmit?

Answer:

javascript
function onSubmit() {
  if (g_form.getValue('short_description') == '') {
    alert('Short description is required!');
    return false; // Stop form submission
  }
  return true;
}

---

✅ 10. What is the difference between getValue() and getDisplayValue()?

Answer:

Method	Returns
getValue()	The sys_id or internal value
getDisplayValue()	The user-facing label or display value

---

💼 Optional: Mock Interview Structure for ServiceNow Developer (20–30 mins)

Section	Topic	Duration
1️⃣ Intro & Experience	Your background and ServiceNow modules used	5 mins
2️⃣ GlideRecord	Read, Update, Insert, Delete, Aggregates	5–7 mins
3️⃣ Client Scripts	g_form, g_user, onLoad, onSubmit	5–7 mins
4️⃣ Business Rules / Script Includes	Use cases and syntax	5 mins
5️⃣ Real-Time Scenario	“Update all open incidents for a user” type task	5 mins
6️⃣ Questions for Interviewer	Ask about projects, ServiceNow scope, etc.	2–3 mins

---

Would you like:

• 10 Business Rule & Script Include questions next?

• A full real-time coding test scenario?

• A ServiceNow project assignment task for practice?

Let me know and I’ll prepare it!

You said:

yes

ChatGPT said:

Excellent! Here's a set of 10 interview questions with answers focused on Business Rules and Script Includes, followed by a real-time coding task scenario you can practice.

---

✅ 10 ServiceNow Business Rule & Script Include Interview Questions with Answers

---

✅ 1. What is a Business Rule in ServiceNow?

Answer:
A Business Rule is a server-side script that runs when a record is inserted, updated, deleted, or queried. It’s used to enforce business logic on the server side.

---

✅ 2. What are the types of Business Rules?

Answer:

• Before: Runs before the record is saved to the database.

• After: Runs after the record is saved.

• Async: Runs after the record is saved but asynchronously.

• Display: Runs before the form is loaded (for passing data to the client).

---

✅ 3. How do you prevent a record from being inserted in a Business Rule?

Answer:
In a Before Insert rule:

javascript
if (current.short_description == '') {
  gs.addErrorMessage('Short description is required.');
  current.setAbortAction(true);
}

---

✅ 4. What is the use of current and previous in Business Rules?

Answer:

Object	Description
current	Represents the current state of the record being processed.
previous	Represents the state before the current update (only on update).

---

✅ 5. What is a Script Include in ServiceNow?

Answer:
A Script Include is a reusable piece of server-side JavaScript logic that can be called from Business Rules, Workflows, or even client-side (via GlideAjax).

---

✅ 6. How do you call a Script Include from a Business Rule?

Answer:

javascript
var obj = new MyScriptInclude();
obj.myFunction();

---

✅ 7. How do you make a Script Include callable from client-side code?

Answer:
Set the Client Callable checkbox to true, and define your class like this:

javascript
var MyScriptInclude = Class.create();
MyScriptInclude.prototype = Object.extendsObject(AbstractAjaxProcessor, {
  myFunction: function() {
    return 'Hello from server!';
  }
});

---

✅ 8. What’s the difference between isValidRecord() and isNewRecord()?

Answer:

Method	Purpose
isNewRecord()	Returns true if the GlideRecord is new.
isValidRecord()	Returns true if the GlideRecord has a valid record from the database.

---

✅ 9. What is AbstractAjaxProcessor used for?

Answer:
It is a base class used in Script Includes that allows it to handle AJAX calls from the client side.

---

✅ 10. How do you call a Script Include using GlideAjax from the client side?

Answer:
Client Script:

javascript
var ga = new GlideAjax('MyScriptInclude');
ga.addParam('sysparm_name', 'myFunction');
ga.getXMLAnswer(function(response) {
  alert(response);
});

Script Include:

javascript
var MyScriptInclude = Class.create();
MyScriptInclude.prototype = Object.extendsObject(AbstractAjaxProcessor, {
  myFunction: function() {
    return "Returned from server";
  }
});

---

🧠 Real-Time Coding Scenario Task (Assignment)

🔹 Task: Write a Before Update Business Rule on the incident table to:

• Set the state to “On Hold”

• Set the hold reason to “Awaiting User Info”

• Only when the category is changed to “Inquiry / Help”

---

✅ Expected Code (Business Rule: Before Update → condition: current.category.changesTo("inquiry")):

javascript
if (current.category.changesTo("inquiry")) {
  current.state = 3; // On Hold
  current.hold_reason = "Awaiting User Info";
}

---

Would you like:

• 📘 A hands-on mini project task to simulate real-world implementation?

• ✍️ A set of 10 Flow Designer or Integration questions?

• 🧪 Mock test paper for ServiceNow Developer?

Let me know and I’ll prepare it for you right away!

You said:

yes

ChatGPT said:

Awesome! Here's a complete hands-on mini project task, plus 10 Flow Designer & Integration interview questions with answers, and a mock ServiceNow Developer test paper to practice.

---

✅ Mini Project Task: Hands-On Simulation (Intermediate Level)

🏗️ Scenario: Auto-Assign Incident Based on Category

Goal:
When an incident is created:

• If category = "Network", assign it to group "Network Support".

• If category = "Database", assign it to group "DB Support".

• Automatically set priority = 2 if it's High or Network category.

---

🛠️ Steps to Implement:

1. Create a Business Rule

   • Table: incident

   • When: Before Insert

   • Conditions: Leave blank (use script)

   • Script:

javascript
if (current.category == 'network') {
  current.assignment_group.setDisplayValue('Network Support');
  current.priority = 2;
}

if (current.category == 'database') {
  current.assignment_group.setDisplayValue('DB Support');
}

if (current.impact == 1 || current.category == 'network') {
  current.priority = 2;
}

2. Test Cases:

   • Submit new incidents with various categories and verify if assignment group & priority are set as expected.

---

✅ 10 Flow Designer & Integration Questions with Answers

---

✅ 1. What is Flow Designer in ServiceNow?

Answer:
Flow Designer is a low-code/no-code tool that allows users to automate processes using flows, actions, and conditions without scripting.

---

✅ 2. What is a Trigger in Flow Designer?

Answer:
A trigger defines when the flow should run. It can be a table event (e.g., record created/updated) or a schedule.

---

✅ 3. How do you call a subflow from a main flow?

Answer:
Use the "Subflow" action within your main flow to call another flow.

---

✅ 4. What’s the difference between Flow and Subflow?

Flow	Subflow
Has trigger	No trigger
Runs independently	Runs when called from another flow

---

✅ 5. How do you test a flow without real data?

Answer:
Use the Test button in Flow Designer and provide sample inputs if required.

---

✅ 6. What is IntegrationHub in ServiceNow?

Answer:
IntegrationHub allows flows to connect with external systems using Spokes, REST, SOAP, Email, or PowerShell integrations.

---

✅ 7. What is a Spoke in IntegrationHub?

Answer:
A Spoke is a prebuilt set of actions, subflows, and templates for integrating with a third-party system (e.g., Slack, Microsoft Teams, Jira).

---

✅ 8. How do you create a custom REST integration?

Answer:

• Navigate to: System Web Services → REST Message

• Define Endpoint, Method (GET/POST), Headers, etc.

---

✅ 9. How can you log the flow execution result?

Answer:
Use the "Log" action in Flow Designer, or use system logs (e.g., in Script step via gs.log() in server script).

---

✅ 10. What are common authentication methods used in REST integrations?

Answer:

• Basic Auth (username/password)

• OAuth 2.0

• JWT (JSON Web Token)

• API Key

---

✅ Bonus: Mock ServiceNow Developer Test (20 Questions – Mix of Script, Logic, Concept)

#	Question	Type
1	What is the difference between before and after Business Rule?	Theory
2	Write a GlideRecord to fetch open incidents assigned to a group	Script
3	How do you make a field hidden in a client script?	Script
4	What is the use of Display Business Rule?	Concept
5	Create a Script Include to return user department	Script
6	What is the difference between g_form.setValue() and g_form.getValue()?	Theory
7	Explain Script Include vs Business Rule	Concept
8	What is a scoped application?	Concept
9	Call a Script Include from GlideAjax	Script
10	Explain the use of Flow Designer	Concept
11	What is a Catalog Client Script?	Concept
12	How to set default value for a field via UI Policy?	Concept
13	Difference between GlideAjax and GlideRecord	Concept
14	Can you write GlideRecord inside a UI Policy?	Trick Question
15	Explain gs.info() and gs.addErrorMessage()	Script
16	How do you secure Script Includes from unauthorized calls?	Concept
17	Write code to insert a new task record	Script
18	What are ACLs?	Concept
19	How to debug Business Rules?	Concept
20	What does current.update() do in After Business Rule?	Trick Question