Accenture Oracle Application Developer Interview Questions and Answers

Q1. Can we call future method from batch class
Ans. 
Yes, future methods can be called from a batch class in Salesforce.
• Future methods can be called from batch classes to perform asynchronous processing.

• This can be useful for offloading long-running tasks to future methods to avoid hitting governor limits.

• Example: Calling a future method from a batch class to update records in Salesforce asynchronously.
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Q2. What's the use of @track decorator. Is it mandatory to explicitly use it? If yes, for which use case?
Ans. 
The @track decorator in Salesforce is used to track changes to a property in a Lightning web component.
• Used to make a property reactive and trigger re-renders when its value changes

• Not mandatory but recommended for properties that need to be reactive

• Use @track when you want changes to a property to be reflected in the UI
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Q3. When does APEX CPU Limit Exceeded error happens. What's the best practice to avoid getting this error?
Ans. 
APEX CPU Limit Exceeded error happens when code consumes too much CPU time. Best practices include optimizing code, reducing loops, and using asynchronous processing.
• Avoid using nested loops and optimize code for better performance

• Use asynchronous processing like @future or Queueable to offload CPU intensive tasks

• Limit the use of SOQL queries inside loops to reduce CPU consumption
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Q4. When does Mixed DML Exception occurs?
Ans. 
Mixed DML Exception occurs when DML operations are performed on setup and non-setup objects in a single transaction.
• Occurs when DML operations are performed on both setup and non-setup objects in a single transaction

• Setup objects include User, Profile, PermissionSet, etc.

• Non-setup objects include custom objects, standard objects like Account, Contact, etc.
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Q5. Debug the following code: var a=10; function abc() { console.log(a); var a=2; } abc();
Ans. 
The code will output 'undefined' because variable 'a' is hoisted within the function.
• Variable 'a' is hoisted to the top of the function scope, so when 'console.log(a)' is called, 'a' is undefined.

• To fix this, move the declaration of 'var a=2;' above the 'console.log(a);' statement.
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Q6. Write a SOQL query to fetch the values of description field from the Account. Why does "the description field cannot be filtered in the query call"?
Ans. 
SOQL query to fetch description field from Account and reason for inability to filter
• SOQL query: SELECT Description FROM Account

• Description field is not filterable because it is a long text field

• Long text fields cannot be filtered in SOQL queries
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Q1. NA explained below
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Q2. NA explained below1
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Q1. Project related questions
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Q2. Flows, lwc, sharing, cdc, exp cloud
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Q1. Lookup masterdetail owd and profile permissions write a trigger LWC - decoraters
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Q1. Tell about yourself
Ans. 
Experienced Oracle DBA with 5+ years of hands-on experience in managing databases, optimizing performance, and ensuring data security.
• 5+ years of experience as an Oracle DBA

• Proficient in database management, performance optimization, and data security

• Skilled in troubleshooting and resolving database issues

• Strong knowledge of Oracle database architecture and SQL

• Certified Oracle Database Administrator (OCA/OCP)
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Q1. APex Trigger, Security, LWC, Asynchronous apex
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Q1. 1) Learnings from my current company 2)why HCL 3) Current and expected Salary.
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Q1. What is apex use in salesforce
Ans. 
Apex is a programming language used in Salesforce for creating custom business logic and functionality.
• Used to write custom code on the Salesforce platform

• Apex classes are used to define data types and methods

• Triggers are used to perform actions before or after records are inserted, updated, or deleted
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Q2. How to LWC use in salesforce
Ans. 
LWC (Lightning Web Components) are a modern UI framework for building web components in Salesforce.
• LWC allows developers to build components using modern web standards like JavaScript and HTML.

• LWC can be used to create custom user interfaces in Salesforce Lightning Experience.

• LWC can interact with Salesforce data and metadata using Apex controllers and Lightning Data Service.
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Basic coding questions including sql and web part.

Q1. Basic salesforce questions 1. role 2. profile 3. apex 4. trigger 5. workflow 5. process builder
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Q2. Basic oops concept some qs from dbms
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