Hear.Com Salesforce Developer Interview Questions and Answers

Continuation class is used to break long-running operations into smaller chunks to avoid timeouts.

• Continuation class is used in Apex to make asynchronous callouts.

• It allows long-running operations to be broken into smaller chunks to avoid timeouts.

• Continuation class is used to maintain the state of the request between the client and server.

• It is useful when making callouts to external systems that may take a long time ...read more

Skinny table is a custom table in Salesforce that contains a subset of fields from a standard or custom object.

• Skinny tables are used to improve query performance by reducing the number of joins required.

• They are read-only and can be created for standard or custom objects.

• They are created and maintained by Salesforce automatically.

• They can be queried using SOQL like any other table.

Optimizing SOQL involves understanding indexing and using it to improve query performance.

• Use WHERE clauses to filter results before querying

• Avoid using SELECT * and instead specify only necessary fields

• Use LIMIT to limit the number of records returned

• Understand the relationship between objects and use JOINs when necessary

• Use the EXPLAIN keyword to analyze query performance

• Index fields that are frequently used in WHERE...read more

An external field is a field on an object that is created by a different system or application.

• External fields are used to integrate data from external systems into Salesforce.

• They can be created using APIs or third-party integration tools.

• Examples of external fields include fields that display data from an ERP system or a marketing automation platform.

OAuth is an open standard for authorization that allows third-party applications to access user data without sharing passwords.

• OAuth stands for Open Authorization

• It allows users to grant access to their resources stored on one site to another site without sharing their credentials

• OAuth uses access tokens to authenticate and authorize requests

• It is widely used by social media platforms like Facebook, Twitter, and Linked...read more