Capgemini Interview Questions, Process, and Tips for Experienced

Decorators in LWC enhance component functionality, enabling reactive properties and lifecycle management.

• 1. @api: Exposes a public property or method to the parent component. Example: @api greeting; allows parent to set greeting.

• 2. @track: Makes a property reactive, so changes trigger re-renders. Example: @track items = []; updates UI when items change.

• 3. @wire: Connects a property or function to a data source, like an...read more

Promise is an object representing the eventual completion (or failure) of an asynchronous operation, and promiseAll is a method that takes an iterable of promises and returns a single Promise that resolves when all of the promises have resolved.

• Promise is used in JavaScript to handle asynchronous operations.

• It represents a value that may not be available yet, but will be resolved at some point in the future.

• PromiseAll ...read more

Connection from Mulesoft to Salesforce is done using Salesforce Connector in Mulesoft Anypoint Platform.

• Use Salesforce Connector in Mulesoft Anypoint Platform to establish connection

• Authenticate using Salesforce credentials (username, password, security token)

• Utilize Salesforce APIs to interact with Salesforce data

Connected App, remote site settings, and OAuth are key components in Salesforce for enabling secure external access to Salesforce data and functionality.

• Connected App is a framework that enables external applications to securely integrate with Salesforce using APIs.

• Remote Site Settings allow Salesforce to make callouts to external services over HTTPS.

• OAuth is an open standard for access delegation, commonly used in Sal...read more

Best practices in Trigger and trigger events

• Best practices include bulkifying triggers, using helper classes, and limiting logic in triggers

• Trigger events are before insert, before update, after insert, after update, etc.

• Examples of trigger events include before insert, after update, etc.

Rollup summary field is a field in Salesforce that calculates values from related records and displays the result on a parent record.

• Rollup summary fields are used to perform calculations on child records and display the result on a parent record.

• They can be used to calculate the sum, count, minimum, or maximum of a field in related records.

• For example, a rollup summary field can be used to calculate the total amount o...read more

With and without sharing in Salesforce determines whether sharing rules are enforced for a class.

• With sharing keyword enforces sharing rules, restricting access to records based on the user's profile and organization-wide defaults.

• Without sharing keyword does not enforce sharing rules, allowing full access to all records regardless of the user's profile or organization-wide defaults.

Future is asynchronous and runs in a separate thread, while Queueable Apex runs in the same thread but can be queued for execution.

• Future methods are used for executing code asynchronously, while Queueable Apex is used for chaining jobs and running them in a specific order.

• Future methods have a limit of 50 per transaction, while Queueable Apex has a limit of 50 jobs in the queue per transaction.

• Future methods cannot be...read more

Future methods in Salesforce can accept primitive data types as parameters.

• Primitive data types like Integer, String, Boolean, etc. can be passed as parameters to Future methods.

• Non-primitive data types like custom objects or collections cannot be passed as parameters to Future methods.

• Example: @future public static void myFutureMethod(Integer param1, String param2) { }

To pass subjects to future methods, use the @future annotation in Apex.

• Use the @future annotation before the method declaration to indicate that the method will run asynchronously in the future.

• Pass the subject parameters to the @future method as arguments when calling the method.

• Ensure that the subject parameters are serializable to be passed to future methods.

Tools for deployment include Salesforce DX, Ant Migration Tool, Change Sets, and Metadata API.

• Salesforce DX is a command-line interface for development and deployment

• Ant Migration Tool is a Java/Ant-based tool for moving metadata between environments

• Change Sets allow for moving configuration changes between orgs

• Metadata API is a web service for managing metadata

Create a trigger on Contact to display the number of contacts on the related Account.

• Create an after insert, update, delete trigger on Contact object

• Query for the count of contacts related to the Account

• Update a custom field on the Account with the count of contacts

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

Display Accounts with related contacts in a list using LWC code

• Create a Lightning web component (LWC) to display the list

• Use Apex to query for Accounts and their related Contacts

• Iterate over the data to display Accounts and their related Contacts in the list

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

Batch class syntax in Salesforce

• Batch class must implement Database.Batchable interface

• Define start, execute, and finish methods

• Use Database.executeBatch method to execute the batch class

Analytical functions are used to perform calculations across a set of rows related to the current row.

• Analytical functions operate on a group of rows and return a single result for each row

• They can be used to calculate running totals, moving averages, rank, percentiles, etc.

• Examples include ROW_NUMBER(), RANK(), SUM() OVER(), AVG() OVER()

The Slowly Changing Dimension Type 2 (SCD2) transformation is used for handling historical data changes in a data warehouse.

• SCD2 transformation is used to track historical changes in dimension tables.

• It maintains multiple versions of a record by adding new rows with updated information and end-dating the previous record.

• Commonly used in scenarios where historical data needs to be preserved and queried.

• Example: When a c...read more

To find the count of different types of joins between two tables A and B.

• Left join: Includes all records from table A and matching records from table B.

• Right join: Includes all records from table B and matching records from table A.

• Inner join: Includes only the matching records from both tables.

• Full outer join: Includes all records when there is a match in either table A or table B.

Developed a machine learning model to predict customer churn for a telecommunications company.

• Used historical customer data to train the model

• Implemented various classification algorithms such as logistic regression and random forest

• Evaluated model performance using metrics like accuracy, precision, and recall

RF algorithm is chosen for its ability to handle large datasets, high accuracy, and resistance to overfitting.

• RF algorithm is an ensemble learning method that builds multiple decision trees and merges them together to improve accuracy.

• It can handle large datasets with high dimensionality and is less prone to overfitting compared to other algorithms.

• RF algorithm is versatile and can be used for both classification and r...read more

I have 5 years of experience working as a project manager in a software development company.

• Managed cross-functional teams to deliver projects on time and within budget

• Developed project plans, schedules, and budgets

• Communicated with stakeholders to ensure project requirements were met

• Resolved conflicts and issues that arose during project execution

• Implemented project management best practices to improve efficiency and

The feasible date of joining is dependent on notice period and completion of pre-employment requirements.

• Consider the candidate's notice period at their current job.

• Factor in any pre-employment requirements such as background checks or medical exams.

• Discuss potential start dates with the candidate to find a mutually agreeable date.