Salesforce Interview Questions with Answers Part 49

1. What is a Mashup?

A mashup is a Web page or application that combines data or functionality from two ore more sources to create a new service.

2. What is JSON?

JSON stands for JavaScript Object Notation. It is a lightweight and text-based format. Supports with UTF-8 and date-time information in ISO8601 format. It uses string value pairs for storing data.

3. Streaming API

Use Streaming API to receive notifications for changes to Salesforce data that match a SOQL query you define, in a secure and scalable way.

4. Salesforce APIs and supported formats

5. What is a PushTopic?

A PushTopic is a record that

1. Defines a channel.

2. Determines what events will cause a notification. Event is a modification of a field while creating, updating, deleting or undeleting a record.

3. Describes the data the notification will contain.

Used in Streaming API.

6. What is WSDL?

Web Services Description Language is an XML format for describing network services as a set of endpoints operating on messages containing either document-oriented or procedure-oriented information.

7. SOAP API Methods using WSDL from Salesforce

8. Difference between SOAP and REST APIs

9. HTTP Methods available in Salesforce

10. What is the use of done attribute in the Salesforce REST API response?

11. What is the Chatter REST API?

12. Lock Contention

13. How to limit a maximum number of characters that can be typed into ui:inputText and other input fields in Lightning Components?

14. Cross-Org Adapter for Salesforce Connect

15. Continuation Class

Use the Continuation class to make callouts asynchronously to a SOAP or REST Web service.

16. How to avoid or reduce SOQLs in Salesforce?

17. A custom object contains some records, now my requirement is to create field in this object with master-detail relationship. Can we create master-detail relationship in this case? 

No, directly we cannot create master-detail relationship if the custom object contains existing records.

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