Salesforce Coding Interview Questions
Preparing for Salesforce Coding Interview: Common Questions
Salesforce Coding Interview Questions
Salesforce coding interview questions typically focus on a candidate's knowledge of Apex programming language, Salesforce development best practices, and problem-solving abilities. Candidates may be asked to write code snippets, solve algorithmic challenges, and demonstrate their understanding of Salesforce's platform capabilities. Common topics include object-oriented programming concepts, data structures, SOQL queries, triggers, and test classes. It's important for candidates to showcase their familiarity with Salesforce development tools, like Salesforce DX and Visual Studio Code, as well as their ability to work with different APIs and integrations within the Salesforce ecosystem. Practice and preparation are key to succeeding in Salesforce coding interviews.
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1 - How can you describe the difference between map and set in Salesforce? Map in Salesforce stores data in a key value pair format where each key is unique, whereas a set is a collection of unique elements with no duplicate values. When accessing data from a map, you use the key to retrieve the corresponding value, while sets are used when you need to store a list of unique values without any specific order.
2) What is the significance of the start method in a batch class? The start method in a batch class is used to collect records or data that need to be processed in batches. It queries the data to be processed and then passes it on to the execute method for further processing. This method helps in breaking down the processing into manageable chunks, improving performance and avoiding hitting governor limits.
3) How can you handle exceptions in Apex code? In Salesforce, exceptions can be handled using try catch blocks. You can enclose the code that might throw an exception within a try block and use catch blocks to handle and process the exceptions when they occur. By catching exceptions, you can prevent the code from crashing and provide specific error messages or alternate logic to handle the exceptional scenarios.
4) Explain the difference between trigger and process builder in Salesforce. Triggers in Salesforce are pieces of code that automatically execute before or after specific data manipulation events occur on an object record. On the other hand, Process Builder is a point and click automation tool that allows you to build automated processes by setting up actions to be executed when specific criteria are met. While triggers offer more flexibility and customization through code, Process Builder provides a more user friendly interface for setting up automation without writing code.
5) How can you implement sharing rules in Salesforce? Sharing rules in Salesforce are used to extend sharing access to records based on specified criteria. You can create sharing rules for standard and custom objects to grant read or read/write access to particular groups of users. By defining the sharing criteria and access levels, you can ensure that data is shared appropriately within your organization while maintaining security and privacy standards.
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