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The PDI Exam covers a broad range of topics related to Salesforce development, including Apex code, Visualforce pages, Lightning Components, and data modeling. PDI exam is structured to assess a developer's ability to design and build custom applications that meet business requirements on the Salesforce platform. PDI Exam also tests the developer's knowledge of best practices for Salesforce development, including security, performance, and scalability.
Salesforce Platform Developer I (PDI) Sample Questions (Q204-Q209):
NEW QUESTION # 204
A developer has identified a method in an Apex class that performs resource intensive actions in memory by iterating over the result set of a SOQL statement on the account. The method also performs a DML statement to save the changes to the database.
Which two techniques should the developer implement as a best practice to ensure transaction control and avoid exceeding governor limits'* Choose 2 answers
Answer: B,C
Explanation:
B: Using partial DML statements (e.g.,Database.insert(list, false)) allows only valid records to be committed while identifying invalid ones, avoiding runtime errors.
D: TheDatabase.Savepointmethod ensures transactional control by allowing rollback to a specific savepoint if an error occurs.
Why not other options?
A: The@ReadOnlyannotation is for read-only operations and would not allow DML operations.
C: TheSystem.Limitclass helps monitor limits but does not directly control transaction behavior.
Best Practices for Apex Transactions
NEW QUESTION # 205
An Opportunity needs to have an amount rolled up from a custom object that is not in a master-detail relationship.
How can this be achieved?
Answer: B
Explanation:
* Why a Trigger on the Child Object?
* Since the relationship is not master-detail, a trigger on the child object can perform aggregate calculations and update the parent Opportunity.
* Why Not Other Options?
* A: Tree sorting is unnecessary and unrelated to roll-up summaries.
* B and D: Neither Streaming API nor Metadata API is suitable for real-time roll-up calculations.
References:Custom Roll-Up Summaries:https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_triggers_best_practices.htm
NEW QUESTION # 206
Application Events follow the traditional publish-subscribe model. Which method is used to fire an event?
Answer: A
NEW QUESTION # 207
A company decides to implement a new process where every time an Opportunity is created, a follow up Task should be created and assigned to the Opportunity Owner.
What is the most efficient way for a developer to implement this?
Answer: C
Explanation:
Record-triggered flows allow automation to create tasks when an Opportunity is created. It is declarative, easy to maintain, and does not require custom code.
Steps:
* Create a record-triggered flow for the Opportunity object.
* Set it to run on record creation.
* Use the "Create Records" element to create a task for the Opportunity owner.
NEW QUESTION # 208
developer must provide custom user interfaces when users edit a Contact either Salesforce Classic or Lightning Experience.
What should the developer use to override the Contact's Edit button and provide this functionality?
Answer: D
Explanation:
When overriding standard buttons in Salesforce Classic and Lightning Experience, different technologies are used.
Salesforce Classic:
Visualforce pages are used to override standard buttons like Edit.
Lightning Experience:
Lightning Components (Aura Components or Lightning Web Components) are used.
Option C: A Visualforce page in Salesforce Classic and a Lightning component in Lightning Experience Correct Answer.
In Salesforce Classic, override the Edit button with a Visualforce page.
In Lightning Experience, use a Lightning Component to override the Edit action.
Reference:
Overriding Standard Buttons
Overrides in Lightning Experience
Options Not Applicable:
Option A and B: Lightning components cannot be used in Salesforce Classic.
Option D: A Lightning page cannot be used to override standard buttons.
Conclusion:
The developer should use a Visualforce page in Salesforce Classic and a Lightning component in Lightning Experience, which is Option C.
NEW QUESTION # 209
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