Top 50 Salesforce Developer Interview Questions and Answers Pdf

16. Where can you make a field required?
Answer: Infield creation, we need to check on “field is mandatory”.

17. What is Trigger.old and when do you normally use it?
Answer:
Trigger .old: Returns a list of the old versions of the sObject records. Note that this sObject list is only available in update and delete triggers.

We normally use it when we:
Need to check if any field is updated in the DML Activity then do another update, like if account name gets changed then update related opportunity name.

18. How to create a field?
Answer: Before doing this we need to know, what are the types of objects and fields
in salesforce.com basically, we have two types of objects and fields

stranded objects, stranded fields and custom fields, custom objects.

• For creating a field in the stranded object we need to click on a particular object in “customize”
• For creating a field in the custom object we need to click on an object at “create”

19. When should we build solutions declaratively instead of with code?
Answer: As a salesforce best practice, if something can be done using Configurations (Declarative) then it’s preferred over coding. The declarative framework is optimized for the platform and is always preferred.

20. What does the Account Hierarchy tell or do?
Answer:  The answer to the above two questions

“Account hierarchy link will appear in accounts”

More information about this

Before going to this we need to know what is account and what is contact?

EXAMPLE: Acer is providing laptops and tabs and I am having the company of ABC bank. My marketing manager called Acer for 50 laptops and my HR manager called Acer for 35 TABs.

According to the above condition

ABC bank is the account and marketing manager and the HR manager will come under contact.

Account hierarchy shows these two contacts under ABC bank link.  (Top 30 Salesforce Developer Questions and Answers Pdf)

21. Give an example of a standard object that’s also a junction object?
Answer: Using a custom junction object, you can model a “many-to-many” relationship between two objects. For example, you may have a custom object called “Bug” that relates to the standard case object such that a bug could be related to multiple causes and a case could also be related to multiple bugs.

To create a junction object, you need to make a new custom object type and add to it two master-detail lookup fields to the two-parent/child objects that are being mapped. When you then want to link a parent to its many children (or visa Versa) you need to then create these records. This can be done programmatically or using any of the many data loading tools.

22. What are Action Support, Action Function and Action Poller used for?
Answer:
Action Function: Provides support for invoking controller action methods directly from JavaScript code using an AJAX request used when we need to perform a similar action on various events. Even though you can use it in place of Action Support as well where the only event is related to only one control.

Action Support: A component that adds AJAX support to another component, allowing the component to be refreshed asynchronously by the server when a particular event occurs, such as a button click or mouseover. Used when we want to perform an action on a particular event of any control like on change of any text box or picklist.

Action Polar: A timer that sends an AJAX update request to the server according to a time interval that you specify. The update request can then result in a full or partial page update. You should avoid using this component with enhanced lists. Used when we want to perform an action on the server again and again for a particular time interval.

23. Describe a use case when you’d control permissions through each of the following?
Answer: The profiles and permission sets are configuration items in Salesforce that will allow us to control different types of functionalities and the roles with allow us to control record visibility primarily.

• Role: “Salesforce offers a user role hierarchy that you can use with sharing settings to determine the levels of access that users have to your Salesforce org’s data. Roles within the hierarchy affect access to key components such as records and reports” (Help-User Role Hierarchy).
• Profile: “Profiles define how users access objects and data, and what they can do within the application. When you create users, you assign a profile to each one” (Help-Profiles).
• Permission Set: “A permission set is a collection of settings and permissions that give users access to various tools and functions. The settings and permissions in permission sets are also found in profiles, but permission sets extend users’ functional access without changing their profiles” (Help-Permission Set).
• Sharing Rules: Watch how you can grant access to records using sharing rules. For example, use sharing rules to extend sharing access to users in public groups, roles, or territories. Sharing rules can never be stricter than your organization-wide default settings. They simply allow greater access for particular users.

24. What are the custom settings? When will you use custom settings?
Answer: Custom settings are similar to custom objects and enable application developers to create custom sets of data, as well as create and associate custom data with an organization, profile, or specific user. All custom settings data is exposed in the application cache, which enables efficient access without the cost of repeated queries to the database. This data can then be used by formula fields, validation rules, Apex, and the SOAP API.

There are two types of custom settings:

• List Custom Settings

A type of custom setting that provides a reusable set of static data that can be accessed across your organization. If you use a particular set of data frequently within your application, putting that data in a list custom setting streamlines access to it. Data in list settings does not vary with profile or user but is available organization-wide. Examples of list data include two-letter state abbreviations, international dialing prefixes, and catalog numbers for products. Because the data is cached, access is low-cost and efficient: you don’t have to use SOQL queries that count against your governor limits.

• Hierarchy Custom Settings

A type of custom setting that uses a built-in hierarchical logic that lets you “personalize” settings for specific profiles or users. The hierarchy logic checks the organization, profile, and user settings for the current user and returns the most specific, or “lowest,” value. In the hierarchy, settings for an organization are overridden by profile settings, which, in turn, are overridden by user settings.

The following examples illustrate how you can use custom settings:

• A shipping application requires users to fill in the country codes for international deliveries. By creating a list setting of all country codes, users have quick access to this data without needing to query the database.
• An application calculates and tracks compensation for its sales reps, but commission percentages are based on seniority. By creating a hierarchy setting, the administrator can associate a different commission percentage for each profile in the sales organization. Within the application, one formula field can then be used to correctly calculate compensation for all users; the personalized settings at the profile level inserts the correct commission percentage.
• An application displays a map of account locations, the best route to take, and traffic conditions. This information is useful for sales reps, but account executives only want to see account locations. By creating a hierarchy setting with custom checkbox fields for route and traffic, you can enable this data for just the “Sales Rep” profile.

25. What are some use cases for using the Schema class?
Answer: You can specify one of the following subject names:

• Knowledge Article Version: To retrieve category groups associated with article types.
• Question: To retrieve category groups associated with questions.

This method is similar to the get describe the method on the Schema. object type token. Unlike the getDescribe method, this method allows you to specify the subject type dynamically and describe more than one subject at a time.

You can first call getGlobalDescribe to retrieve a list of all objects for your organization, then iterate through the list and use describe subjects to obtain metadata about individual objects.

26. How Salesforce organizes sales tracing?
Answer: Salesforce is very scrupulous when it comes to copy complicated details like sales statistics, client details, customers assisted, replication clienteles, in order to generate thorough reports, charts and consoles for keeping track of sales.

27. How can I redirect the user to a page after processing is completed in the controller/extension?
Answer: Two problems here:

1) Your “save” function is shadowed by the standard controller’s “save” function, so your code won’t work. You have to rename the function and call that action instead.

2) “request” is null, because you never assigned a value to it. You don’t need it anyway because you can reference it directly from the controller.

Here’s how I would correct the two items:

public Page Reference save And Congrat() {

controller.save(); // This takes care of the details for you.

Page Reference congrats Page = Page.Congratulations;

congrats Page.setRedirect(true);

return congrats page;

Finally, change the “{!save}” value of the action attribute to “{!saveAndCongrat}”, remove the extra variable, and you’re done.

28. How To Create Master Details Relationship Between Existing Records?
Answer: Directly we can’t create Master-Detail relationship between existing records, first we have to create Lookup relationship and provide valid lookup fields and it shouldn’t null.

29. What are the different types of reports you can create?
Answer:

• Tabular: Tabular reports are the simplest and fastest way to look at data. Similar to a spreadsheet, they consist simply of an ordered set of fields in columns, with each matching record listed in a row. Tabular reports are best for creating lists of records or a list with a single grand total. They can’t be used to create groups of data or charts, and can’t be used in dashboards unless rows are limited. Examples include contact mailing lists and activity reports.
• Summary: Summary reports are similar to tabular reports, but also allow users to group rows of data, view subtotals, and create charts. They can be used as the source report for dashboard components. Use this type for a report to show subtotals based on the value of a particular field or when you want to create a hierarchical list, such as all opportunities for your team, subtotaled by Stage and Owner. Summary reports with no groupings show as tabular reports on the report run page.
• Matrix: Matrix reports are similar to summary reports but allow you to group and summarize data by both rows and columns. They can be used as the source report for dashboard components. Use this type for comparing related totals, especially if you have large amounts of data to summarize and you need to compare values in several different fields, or you want to look at data by date and by-product, person, or geography. Matrix reports without at least one row and one column grouping show as summary reports on the report run page.
• Joined: Joined reports let you create multiple report blocks that provide different views of your data. Each block acts like a “sub-report,” with its own fields, columns, sorting, and filtering. A joined report can even contain data from different report types.

30. What Is The Use Of “transfer Record” In Profile?
Answer: If the user has only Read access on particular record but he wants to change the owner name of that record, then in profile level Transfer Record enables he can able to change the owner.