Top 50 Triggers Interview Questions and Answers

A trigger point is a sensitive area in the muscles or tissues that can cause pain or discomfort when stimulated.

• Trigger points are often found in areas of muscle tension or overuse.

• They can be felt as knots or tight bands in the muscle.

• Trigger points can be caused by muscle injuries, stress, or poor posture.

• They can refer pain to other areas of the body, known as referred pain.

• Treatment for trigger points may include massage, stretching, or injections.

Triggers are used to automatically execute a set of instructions when a specific event occurs in a database.

• Triggers are database objects that are associated with tables and are used to enforce business rules or to perform actions when data is modified.

• They can be used to perform tasks such as auditing changes to data, enforcing referential integrity, or updating related tables.

• Triggers can be defined to execute before or after an INSERT, UPDATE, or DELETE statement is execut...read more

Stored procedures and triggers are used to improve database performance and maintain data integrity.

• Stored procedures allow for precompiled SQL statements, reducing processing time.

• Triggers can automatically enforce business rules and maintain data consistency.

• Both stored procedures and triggers can improve security by limiting direct access to the database.

• Examples of triggers include auditing changes to a table or automatically updating related data in another table.

• Example...read more

Types of triggers in Salesforce include before triggers, after triggers, and future triggers.

• Before triggers are used to update or validate record values before they are saved to the database.

• After triggers are used to access field values that are set by the system (such as a record's ID) and to affect changes in other records.

• Future triggers are used to perform operations asynchronously, such as sending email notifications or updating related records.

• Examples: before insert ...read more

Procedures and triggers are database objects used to automate tasks and enforce rules.

• Procedures are a set of SQL statements that can be executed repeatedly.

• Triggers are special types of procedures that are automatically executed in response to certain events.

• Triggers can be used to enforce business rules, audit changes, or replicate data.

• Procedures and triggers can be written in various programming languages such as SQL, PL/SQL, T-SQL, etc.

Functions are blocks of code that perform a specific task, while triggers are events that automatically execute a function.

• Functions are reusable blocks of code that can be called multiple times in a program.

• Triggers are events that automatically execute a function, such as a button click or a database update.

• Functions can take input parameters and return output values.

• Triggers are often used in database systems to perform actions based on certain events, like inserting a new...read more

Scheduled trigger is time-based while tumbling window trigger is data-based.

• Scheduled trigger is based on a specific time or interval, such as every hour or every day.

• Tumbling window trigger is based on the arrival of new data or a specific event.

• Scheduled trigger is useful for regular data processing tasks, like ETL jobs.

• Tumbling window trigger is useful for aggregating data over fixed time intervals.

• Scheduled trigger can be set to run at a specific time, while tumbling wind...read more

Triggers are actions that are automatically performed when a certain event occurs in a database. Async operations are tasks that run independently of the main program flow.

• Triggers in databases are used to maintain data integrity and automate tasks based on specified conditions.

• Async operations in programming allow tasks to be executed concurrently without blocking the main program flow.

• Examples of async operations include fetching data from a server while the user continues ...read more

Triggers are database objects that execute automatically in response to certain events. Mutating trigger problem occurs when a trigger tries to read or modify a table that is already being modified by the same transaction.

• Triggers can be used to enforce business rules, audit changes, and maintain referential integrity.

• They can be used to automatically update a table when a related table is updated.

• Mutating trigger problem can be solved by using compound triggers, which allow ...read more

TAC stands for Talend Administration Center. Triggers in TAC are used to schedule and automate the execution of jobs.

• TAC is a web-based application used to manage, monitor, and administer Talend jobs and projects.

• Triggers in TAC allow users to schedule the execution of jobs at specific times or based on certain conditions.

• Triggers can be set to run jobs on a recurring basis, such as daily, weekly, or monthly.

• Users can also set triggers to run jobs based on events, such as the...read more

Trigger context variables are predefined variables that contain information about the context in which a trigger is executed.

• Trigger context variables are available in Apex triggers.

• They provide information about the record being processed, the user who caused the trigger to execute, and the execution context.

• Examples of trigger context variables include Trigger.new, Trigger.old, Trigger.isInsert, and Trigger.isUpdate.

Oracle Forms triggers are executed in a specific sequence.

• The first trigger to fire is PRE-FORM.

• The last trigger to fire is POST-FORM.

• Other triggers include WHEN-NEW-FORM-INSTANCE, WHEN-NEW-BLOCK-INSTANCE, etc.

• Triggers can be used to validate data, perform calculations, and control navigation.

Triggers can lead to performance issues, complexity, and potential for unintended consequences.

• Triggers can make code harder to debug and maintain

• They can lead to cascading effects if not carefully implemented

• Performance can be impacted if triggers are not optimized

• Triggers can introduce dependencies between different parts of the codebase

Triggers in WPF are used to apply changes to UI elements based on certain conditions or events.

• Triggers can be used to change the appearance of a control based on user interaction or data changes.

• There are different types of triggers in WPF such as EventTrigger, DataTrigger, and MultiTrigger.

• Example: Using a DataTrigger to change the background color of a button based on a binding value.

Triggers in SLA other than Incident

• Change Requests

• Problem Tickets

• Service Requests

• Major Incidents

Triggers in Oracle PL/SQL are database objects that automatically execute in response to specified events.

• There are two types of triggers in Oracle PL/SQL: row-level triggers and statement-level triggers.

• Row-level triggers fire once for each row affected by the triggering event, while statement-level triggers fire once for each triggering event.

• Triggers can be defined to execute before or after the triggering event.

• Triggers can be used to enforce business rules, perform data ...read more

SQL Triggers are special stored procedures that are automatically executed in response to certain events.

• Triggers are used to enforce business rules or to perform complex calculations.

• Syntax: CREATE TRIGGER trigger_name {BEFORE | AFTER} {INSERT | UPDATE | DELETE} ON table_name FOR EACH ROW {trigger_body}

• Trigger_body can contain SQL statements or calls to stored procedures/functions.

• Triggers can be disabled or enabled using ALTER TRIGGER statement.

• Triggers can be nested up to ...read more

Types of triggers include DML triggers, DDL triggers, and logon triggers.

• DML triggers are fired in response to data manipulation language (DML) events like INSERT, UPDATE, DELETE.

• DDL triggers are fired in response to data definition language (DDL) events like CREATE, ALTER, DROP.

• Logon triggers are fired in response to a LOGON event.

• INSTEAD OF triggers are used to perform an action instead of the triggering action.

Triggers are database objects that are automatically executed in response to specified events.

• Triggers are used to enforce business rules, maintain data integrity, and automate tasks.

• They can be defined to execute before or after an INSERT, UPDATE, or DELETE operation.

• Triggers can be written in SQL or PL/SQL, depending on the database system.

• Unlike stored procedures, triggers are not explicitly called by users or applications.

• Example: A trigger can be created to update a 'las...read more

Triggers in Salesforce are pieces of code that execute before or after specific events occur, allowing for customization and automation of business processes.

• Triggers are used to perform actions based on specific events, such as record creation, update, or deletion.

• They are written in Apex, Salesforce's proprietary programming language.

• Triggers can be used to enforce business rules, validate data, or update related records.

• They can be defined for different objects and can exe...read more

Constraints are used to restrict user input while Declare triggers are used to automate actions based on certain events.

• Constraints are used to validate user input and ensure it meets certain criteria.

• Declare triggers are used to automate actions based on certain events, such as when a new record is created or updated.

• Constraints are defined at the property level while Declare triggers are defined at the class level.

• Constraints can be used to enforce business rules and data i...read more

Triggers and procedures are database objects used to automate tasks and enforce business rules.

• Triggers are special types of stored procedures that are automatically executed in response to certain events, such as insertions, updates, or deletions of data.

• Procedures are a set of SQL statements that are stored in the database and can be executed repeatedly.

• Triggers can be used to enforce business rules, such as preventing invalid data from being inserted into a table.

• Procedure...read more

Triggers in MySQL are database objects that are automatically executed in response to specified events.

• Triggers are used to enforce business rules, maintain data integrity, and automate tasks.

• They can be defined to execute before or after an INSERT, UPDATE, or DELETE operation.

• Triggers can be written in SQL or in a programming language like PL/SQL.

• Examples of trigger events include inserting a new record, updating a record, or deleting a record.

• Triggers can be used to perform...read more

Yes, triggers can be used with select statements in SQL.

• Triggers are database objects that are automatically executed in response to certain events, such as insert, update, or delete operations.

• While triggers are commonly used with insert, update, and delete statements, they can also be used with select statements.

• Using triggers with select statements allows you to perform additional actions or validations before or after the select operation.

• For example, you can use a trigge...read more

Triggers are database objects that automatically execute in response to certain events. Stored procedures are precompiled SQL statements.

• Triggers are used to enforce business rules or to audit changes to data.

• Stored procedures are used to encapsulate frequently used SQL statements for reuse and to improve performance.

• Triggers can be used to update related tables when a record is inserted, updated, or deleted.

• Stored procedures can be used to perform complex data manipulations ...read more

Triggers in Salesforce are used to perform automated actions before or after records are inserted, updated, or deleted.

• Triggers are Apex scripts that are executed before or after specific data manipulation language (DML) events occur in Salesforce.

• They can be used to perform tasks such as validating data, updating related records, or sending email notifications.

• Triggers can be written for different objects in Salesforce, such as Accounts, Contacts, or Opportunities.

• They are e...read more

A trigger is a set of actions that are automatically performed when a specified event occurs, while a constraint is a rule that restricts the values in a database.

• Triggers are used to perform actions such as updating other tables or logging changes when a certain event occurs, like an insert, update, or delete operation.

• Constraints are used to enforce rules on the data in a database table, such as ensuring that a column does not contain null values or that a value is unique.

• T...read more

A trigger is a special type of stored procedure that automatically executes in response to certain events.

• Triggers are used to enforce business rules or data integrity.

• They can be used to audit changes to data.

• Triggers can also be used to replicate data across multiple tables or databases.

• Examples of trigger events include INSERT, UPDATE, and DELETE operations on a table.

Triggers and stored procedures are database objects used to automate tasks and enforce business rules.

• Triggers are code that automatically executes in response to certain events, such as inserting or updating data in a table.

• Stored procedures are pre-written code that can be called to perform a specific task, such as retrieving data or updating records.

• Triggers and stored procedures can help ensure data integrity and consistency, as well as improve performance by reducing the...read more

Use a trigger to insert contacts to newly created contacts

• Create a trigger on the Contact object

• Use the 'after insert' trigger event

• Loop through the newly created contacts

• Create a new contact for each one and set the necessary fields

• Insert the new contacts

Create a trigger to automatically create a contact when an account is created

• Use Apex trigger on Account object

• Query the necessary information from the Account record

• Create a new Contact record with the relevant information

• Insert the Contact record

No, COMMIT cannot be used in triggers.

• COMMIT cannot be used in triggers as it can cause mutating table errors.

• Triggers are automatically committed by the database after they are executed.

• Using COMMIT in triggers can lead to data integrity issues and performance problems.

Trigger to update StageName on Opportunity when Account Active field is set to Yes

• Create a trigger on Account object

• Query for related Opportunities

• Update StageName field on Opportunities where Account Active is Yes

Writing trigger on parent child scenario in Salesforce

• Create trigger on parent object

• Use trigger context variables to access child records

• Perform necessary operations on child records based on parent record changes

Write trigger to count the number of contacts any account contains.

• Create a trigger on the Contact object

• Query for all contacts related to the account

• Use a count variable to keep track of the number of contacts

• Update a custom field on the Account object with the count

Create a trigger on Order Products to display the most sold product type on the account

• Create a trigger on Order Products object in Salesforce

• Use SOQL query to count the number of each product type sold

• Update the most_sold_product field on the Account object with the highest sold product type

Create a trigger to identify duplicate records based on phone number and email

• Create a trigger on the object where duplicates need to be checked

• Query for records with matching phone number and email

• Handle the logic to flag or prevent duplicates from being created

• Consider using a map to store unique values and compare with new records

Use trigger to update child record field from parent record

• Create a trigger on the parent object

• Query for the child records related to the parent record

• Update the field on the child records with the desired value

Triggers in SQL server are special stored procedures that are automatically executed in response to certain events on a particular table or view.

• Triggers can be used to enforce business rules, audit changes, or maintain referential integrity.

• There are two main types of triggers in SQL server: DML triggers and DDL triggers.

• DML triggers are fired in response to data manipulation language (DML) events like INSERT, UPDATE, and DELETE.

• DDL triggers are fired in response to data def...read more

Create a trigger on Account to prevent deletion if associated with one or more contacts

• Create an after delete trigger on Account object

• Query for related contacts using SOQL

• If contacts are found, add an error message to prevent deletion

A trigger in SQL is a special type of stored procedure that is automatically executed when certain events occur in a database.

• Triggers can be used to enforce business rules, perform auditing, or maintain referential integrity.

• They can be defined to execute before or after an INSERT, UPDATE, or DELETE operation on a table.

• Examples of triggers include automatically updating a last modified timestamp when a record is updated, or preventing deletion of a record if certain conditi...read more

In SQL Server, you can create up to 32 triggers on a table.

• SQL Server allows up to 32 triggers per table

• Triggers can be of different types like DML triggers, DDL triggers, and logon triggers

• Each trigger can be defined for INSERT, UPDATE, or DELETE operations

A trigger in SQL is a special type of stored procedure that is automatically executed when certain events occur in a database.

• Triggers can be used to enforce business rules, maintain referential integrity, and automate repetitive tasks.

• There are two main types of triggers in SQL: BEFORE triggers and AFTER triggers.

• An example of a trigger is a BEFORE INSERT trigger that automatically sets a default value for a column if no value is provided.

A trigger function in SQL is a stored procedure that is automatically executed in response to certain events on a particular table.

• Triggers can be set to execute before or after INSERT, UPDATE, or DELETE operations on a table.

• They are useful for enforcing business rules, auditing changes, and maintaining data integrity.

• Example: CREATE TRIGGER audit_trigger AFTER INSERT ON employees FOR EACH ROW EXECUTE PROCEDURE audit_function();

It depends on the specific requirements and use case.

• Use flows for declarative automation and to automate standard processes.

• Use triggers for more complex automation and to perform custom logic.

• Flows are easier to build and maintain, while triggers offer more flexibility and control.

• Consider the complexity of the automation, the need for custom logic, and the scalability of the solution.

Trigger code to update a field in a table when a new record is inserted

• Create a trigger on the table for INSERT events

• Use the NEW keyword to access the newly inserted record

• Update the desired field in the table using the NEW values

Use a trigger to update records in both child and parent objects

• Create a trigger on the child object that updates the related parent object

• Use SOQL queries to retrieve and update the parent object records

• Handle bulk updates by using trigger context variables like Trigger.new and Trigger.old

Before triggers are executed before the record is saved to the database, while after triggers are executed after the record is saved.

• Before triggers are used to validate or modify record values before they are saved.

• After triggers are used to perform additional actions after the record is saved.

• Before triggers can be used to prevent the record from being saved by throwing an exception.

• After triggers can be used to update related records or perform asynchronous operations.

A trigger is used to perform calculations and updates on related records when a record is created, updated, or deleted.

• Triggers are written in Apex and are used to automate processes in Salesforce.

• They can be used to perform calculations, updates, or validations on related records.

• For roll up summaries, triggers can be used to calculate and update summary fields on parent records based on child records.

• Example: Trigger to calculate total amount of all related opportunities on...read more

Triggers are special stored procedures that are automatically executed in response to certain events.

• Triggers can be used to enforce business rules or data integrity

• They can be used to audit changes to data

• Triggers can be defined to execute before or after an INSERT, UPDATE, or DELETE statement

• They can be used to perform complex calculations or data transformations

Create a trigger to count Opportunity Line Items and display in Account custom field

• Create a trigger on OpportunityLineItem object

• Use SOQL query to count the number of Opportunity Line Items related to the Account

• Update the custom field on Account with the count value

A trigger in SQL Server is a special type of stored procedure that automatically executes when certain events occur in a database.

• Triggers can be used to enforce business rules, audit changes, or replicate data.

• There are two main types of triggers in SQL Server: DML triggers and DDL triggers.

• DML triggers fire in response to data manipulation language (DML) events like INSERT, UPDATE, and DELETE.

• DDL triggers fire in response to data definition language (DDL) events like CREATE...read more

SQL triggers are database objects that automatically perform actions when certain events occur in a database.

• Triggers can be used to enforce business rules, maintain referential integrity, and automate repetitive tasks.

• Examples of trigger events include INSERT, UPDATE, and DELETE operations on specific tables.

• Triggers can be defined to execute before or after the triggering event.

• Common uses of triggers include auditing changes to data, enforcing data validation rules, and up...read more

Different trigger patterns are used in software development to initiate actions based on specific events.

• Triggers can be based on time, user input, system events, etc.

• Examples include event-driven programming, polling triggers, and scheduled triggers.