Question 1
Link to questionA company is integrating its Salesforce instance with an external application using the Salesforce REST API. The external application needs to retrieve a list of all active accounts and their associated contacts. The developer decides to use a combination of SOQL queries and REST API calls. Which approach should the developer take to ensure efficient data retrieval while adhering to Salesforce API limits?
Use a single SOQL query to retrieve active accounts and their contacts in one call, utilizing relationship queries.
Make separate API calls for accounts and contacts to avoid hitting the governor limits.
Retrieve all accounts first and then filter them in the external application to find active ones.
Use the Bulk API to retrieve accounts and contacts in batches, regardless of their active status.
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Correct answer
Use a single SOQL query to retrieve active accounts and their contacts in one call, utilizing relationship queries.
Salesforce has a governor limit that restricts the number of API calls that can be made within a 24-hour period, as well as limits on the number of records returned in a single call. By using a relationship query, the developer can efficiently fetch the necessary data in one go, thus conserving API call limits and reducing latency in data retrieval. For example, a SOQL query like the following can be used: ```sql SELECT Id, Name, (SELECT Id, FirstName, LastName FROM Contacts) FROM Account WHERE IsActive__c = TRUE ``` This query retrieves all active accounts along with their related contacts in a single API call. On the other hand, making separate API calls for accounts and contacts (as suggested in option b) would lead to unnecessary overhead and increase the risk of exceeding API limits. Similarly, retrieving all accounts and filtering them externally (option c) is inefficient as it would involve transferring more data than necessary. Lastly, using the Bulk API (option d) is not suitable in this case since it is designed for large data sets and asynchronous processing, which is not required for a simple retrieval of active accounts and their contacts. Thus, the best practice in this scenario is to optimize the API usage by combining the queries, ensuring compliance with Salesforce\'s API limits while achieving the desired data retrieval efficiently.
