Questions and Answers
What will be the value of x based on the provided implementation?
What is the default visibility for methods in an interface?
Which method should be used to sanitize input parameters before use?
Which implementation is necessary for handling null items in a list of Accounts?
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What will happen if the transaction exceeds the governor limit?
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What annotation can be used for read-only access in Apex classes?
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What is one way to manage exceptions within DML operations in Apex?
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When creating custom objects in a system, what should be considered for fields?
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Study Notes
Implementation Considerations
- Correct implementation of code can significantly impact functionality.
- Value of variable
xdetermined from code analysis is 4.
Method Calls
- A method may be invoked during trigger execution via a Lightning component.
- Interface methods in programming languages are public by default.
Safety Measures in Code
- Use of
@ReadOnlyannotation andwith sharingkeyword ensures secure data handling. - To prevent injection attacks, it's recommended to use the
escapeSingleQuotesmethod for parameter sanitization.
DML Operations
- Implementing a try/catch block can effectively manage DML exceptions, ensuring better handling of errors.
- Upsert DML statements facilitate the combination of insert and update operations seamlessly.
- Prior to performing DML, it's crucial to remove null items from data lists to avoid errors during execution.
Governor Limits
- Understanding and adhering to governor limits in programming is essential to ensure transactions do not exceed permissible boundaries.
- A try-catch block can mitigate the impact of exceeding governor limits by catching exceptions.
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Description
Test your knowledge on Salesforce Apex programming concepts, including method calls, safety measures, DML operations, and governor limits. This quiz covers essential practices for effective and secure coding within the Salesforce environment.
